Comments and help given

 
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  • From Chris on Mercedes Diesel Injector Advice - Sprinter and others

    Thanks for an excellent, no-nonsense description. (I am a motoring journalist, so very critical of most of the utter tosh you see on the Internet in respect of problems such as this.) I first did this job four years ago – with all the usual dramas, having unknowingly let the ‘black death’ build up to epic proportions – and am now in the process of doing it again on the same vehicle. The information I was after was the tightening torque for the stretch injector bolts – having mislaid my notes from 2010 – and this you have provided, along with many other useful details. I wish I had seen this when I first needed to do the job! Best wishes, Chris

    • From Matt on Mercedes Diesel Injector Advice - Sprinter and others

      Thanks…Great article…BUT…..any advice please

      Managed to replace the copper washers on the first 2 injectors and replaced the stretch bolts….all back together……only thing is she just won’t start.

      Bled the fuel to the injectors.
      Tried easy start and tow starting.
      Used battery pack for starting.
      Already replaced glow plugs and tested for power to glow plugs.
      Already replaced seals on the fuel bar.

      When tow starting she fired a little, abit like when you start the van with the key without the chip in (we weren’t using the wrong key)

      So….if anyone has any advice, it would be most welcome…..we couldn’t run diagnostics because we don’t have the right connector for OBD port…..

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        From Steve Ball on Mercedes Diesel Injector Advice - Sprinter and others

        Hi Matt,
        Sometimes a section of the push on electrical connector to the injectors breaks and goes inside the connector preventing proper coupling of the plug. If one injector is not connected it will not run. Also check wiring from the plugs to the loom it may have been damaged. Pay special attention to the camshaft sensor at the rear of the rocker cover and make sure there has been no damage to those wires during the injector removal replacement process. Check too the ECU fuse under the steering column, no power here and this will hold off any starting.
        Hope these few pointers help.
        Regards
        Steve

    • From Bob on Mercedes Diesel Injector Advice - Sprinter and others

      Hi just getting mine done by a guy who said he has been a mechanic for 20 years, he removed all 6 injectors on my sprinter 319 without damaging any of them….however while he was in the process of putting everything back together he realised that the engine would not spin 360% by hand…he had unknowingly dropped a piece of the black gunk into the combustion chamber. Now I am waiting for him to finish the job that has turned from a one week job to coming up to 3 weeks now. Decided to get the 2 heads machined and tidied up while they were off. BIG lesson here..MAKE SURE NOTHING gets loose and fall into that little hole.

      • Avatar photo

        From Steve Ball on Mercedes Diesel Injector Advice - Sprinter and others

        Hi Bob,
        Its a rather sad tale you tell, bad luck just sometimes befalls us all… but on the upside you have made a wise investment in working the head whilst you have the opportunity. This unscheduled maintenance should now hopefully give you many more miles of trouble-free running. Thanks for the insight and for underlining the high importance of plugging those holes whilst de-coking!
        All the best
        Steve

        • From John Abeyta on Mercedes Diesel Injector Advice - Sprinter and others

          Hi Steve,
          I have found your post most informative as I am having the exact same trouble with my E Class 2.7 diesel. I particularly agreed with your rant at the start. Is the Sprinter the same engine as I am considering putting the 8mm bolt in to make it stronger? Also, I was wondering if there is enough wall to put in an 8mm helicoil.

          Thanks for a first class post
          John Abeyta

          • From ken on Mercedes Diesel Injector Advice - Sprinter and others

            I had a jammed injector and while the engine was still warm, I put about 1 table spoon of diesel around the injector, let it soak for about half an hour. Clamp the injector body with a pair of vice grips and slowly wriggle it back and forth, slowly but surely the injector came out after about half an hour. I also found those injector seating tools chatter and leaveg grooves in the alloy seat.

            I had a helicoil installed on number 4 injector “318 cdi”. Lasted about 6 months. It did let go. Look up Time Sert thread repairer. Or use an 8 mm stud like I did.

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            From Steve Ball on Mercedes Diesel Injector Advice - Sprinter and others

            Hi Ken,
            Thanks for the input, the timesert is the best solution and is my recommendation in the text, however you can engineer or get engineered a similar blind ‘plug’ made out of stainless steel if you have the use of a lathe and the capability – Though for a one-off you would certainly use timesert. While I hear you about the hold down bolt, I am of the opinion that the stretch to yield bolt and its slightly ‘elastic properties’ may maintain a more consistent clamping force through an ever changing range of temperatures (slight expansion and contraction of each use of the engine) rather than a stud fixing – that is not to say it would not work just perfect for you just my opinion !

            All the best
            Steve

          • Avatar photo

            From Steve Ball on Mercedes Diesel Injector Advice - Sprinter and others

            Hi there John,
            The trouble is that the threaded portion is only that which exists below the rocker cover clearance hole. Although the 8mm bolt idea is great you would have to get an engineering company or some friend with a lathe to turn the base of the cap head into a dome mating similar to that on the original clamp bolt. This is important as it distributes the angular forces correctly onto the clamp. As I am sure you can imagine a flat surface here on clamping this down would cause some issues. I considered using a standard 8mm cap head bolt with a specially made dome under washer that fitted the clamp correctly. Apart from that there is no reason I can see why you cant do this. There is ample material radially but the depth is critical so as not to break through into the water jacket. Interestingly the commercial repair inserts are blind at the base and not thru.
            All the best
            Steve

    • Avatar photo

      From Steve Ball on Mercedes Diesel Injector Advice - Sprinter and others

      Hi Chris,
      Glad you found the info useful, thanks also for the very kind words! If only I had more time to add more information, life has a habit of throwing obstacles in the way of that one – but I do enjoy keeping it rolling as and when I get the chance.
      All the best
      Steve

  • From Mike Parodi on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Hi Steve
    Spoke to Merc, they told me that sensor has no o ring but pressure regulator has. Problem is that they can only be changed on engines up to no 508. mine is 510 so it means a new regulator.

    Could it therefore mean that this is not the problem as they changed the design to stop it happening?

    regards
    Mike

    • Avatar photo

      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Hi Mike, the regulator seals on as you identified correctly as the regulator (I called sensor) will give problems and also the sensor itself can realise issues without flagging any EDC or fault codes ! Its a common problem and I would make a few enquiries as to what you are being told about the two version as I thought they both have a plunger and piston arrangement that carries O rings. Perhaps the dealer actually meant that the later part was not available with separate O rings as spare parts. Worth enquiring anyway.
      What did you find with the leak down test on the injectors, I am assuming this is all OK?
      Don’t forget the cam sensor in the back of the rocker cover.
      All the best
      Steve

      • From Mike Parodi on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

        Hi Steve

        I should have explained it better, with the new regulator the O rings are not available as a separate item apparently (from 2 dealers) How much of this is down to an improvement or just a sales ploy who knows. The one fitted was replaced by merc about 2 years ago trying to fix a problem (Which it didn’t). I have the original so could swap them over as there is no obvious damage to the o rings.

        The leak off test I did as per the Sprinter Source web site using 3/8″ tubing. I got about 1/2″ in each which equates to 1ml, well below the max allowable.

        I did however ever read later on an extract of a merc manual that says to disconnect the pressure regulator as well as the cam sensor.

        As for the cam sensor I whipped that out and cooled it down with a wet rag as quick as I could, then popped it back in and the van restarted.

        However It might well have do so any way. I tried the reverse and stuck the sensor in some hot water but van still started.

        Maybe its ok or I else I didn’t get it hot enough, so I will try again.

        Will let you know if the other regulator makes any difference.

        Thanks again for your time

        best regards
        Mike

  • From Mike Parodi on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Hi Steve,
    Since my last post ( March 1st) I have resorted to replacing the complete engine loom. It only had 2 test runs out and all seems ok so far.

    However the van has developed a starting problem when the engine is hot. I hoped that this was also being caused by a damaged wire in the loom.

    Alas no, stopped in the Esso on the way back this afternoon and it wouldn’t go. It goes to fire but cant quite get there and shakes and bangs as though its trying to run on 2 cylinders.

    Leave it to cool for a few minutes and it starts fine. Could this be the cam sensor as there seems to be no problem with fuel pressure or edc light?

    I know this is off the true subject of your thread but any advice would be very much appreciated

    Best regards
    Mike

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      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Mike, this is most probably due to failure of the small O rings that live on the fuel rail pressure sensor. The fact it is worse at starting when warm/hot is a common tell tale. Also you must check and swap out the cam position sensor on the top of the rocker as this some times has heat related faults purely because of the fact it spends its life running from hot to cold. My money is on the O rings!! (Pop into your local dealer and get a couple, they will be used to selling them !)
      All the best
      Steve

      • From mike on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

        Hi steve
        I will check those as well, can they leak then without tripping the EDC light?
        Regards
        Mike

    • From Mike Parodi on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Ps Will do a leak of test today to rule out the injectors

      regards

      Mike

      • From John on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

        Hey guys I got my vito sorted out ended up being the ecu. Must have damaged a chip inside it . I got one from the uk numbers didn’t match up totally the last 4 digets were different to what I had. I got the ecu and key with immobilizer plugged it all in and no more fault codes or limp mode driven it about 100 kms without any issue so it’s good to know the ecu kits are interchangeable

        • Avatar photo

          From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

          That’s good info to know John, pleased you are running again. Thanks for the info and update.
          Regards Steve

  • From Graeme Power on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Hi Steve, I am going to tackle your fault guide to see what I can find wrong with my Vito, 1999 108cdi manual. I bought it and have done precious little driving as its been in the workshop seemingly forever with EDC and Glow Plug Light on.

    A brief rundown, 1st workshop fitted new glow plugs and 2nd hand glow plug relay, fault returned after about 2 weeks, I went to a shop that has experience with Vitos and they gave up after 6 weeks and returned the car to me, no charge.

    2nd shop a diesel specialist (and I saw a few Vito’s on the floor so I was quietly confident), replaced the Injectors ($2500.00) problem returned 2 weeks later, said the Computer was faulty and required replacing.

    I decide to go to Mercedes, First attempt played with it for 2 weeks and disconnected the vacuum line to the vent and headlight control saying there was a vacuum leak robbing vacuum pressure on the turbo line and causing fault $700.00 returned car problem returned after 2 weeks. I returned to Mercedes and they found a faulty capacitor in the computer quoted $3000.00 for computer plus $1200.00 labour, I had a 2nd hand computer tested and cloned by a computer specialist and Mercedes fitted it $1200.00, returned the car two weeks later fault returned. Given this history where would you start looking, I have had enough with incompetence being charged at $180.00 and hour. It in to me for over $4700.00 in parts and labour and still wont drive more than one tank of gas before I’m back in the workshop.
    Graeme Power

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      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Hi there Graeme,
      Wow! what an ordeal… I would imagine if the glow plug lamp is on all the time (or does this only light in conjunction with the EDC lamp when the fault occurs?) I will assume that the fault is there from turning on the ignition and both the EDC and glow light are illuminated. If this is the case it is my view that you have a wiring issue. If you were to say that the ECU had not been replaced then that would have been my knee-jerk suggestion as problems are not uncommon here. However I think it is safe to assume that the fault would not be present in two ECUs ! So my suggestion still stands – Wiring/cable fault.
      First I would investigate the wiring around the glow plug relay as this is known to be troublesome, especially with body bonded earths and supplies. Check the condition and connectivity within the connectors of the red and black wires respectively.(include the thinner control wires in your inspection too)
      It is unusual in itself for Glow faults to cause an EDC limp home condition and this is why I err toward a wiring issue, perhaps a sensor is grounded to chassis or shorted to another one somewhere on the engine loom.
      You must check the wiring by the engine mounts, John reported that if your van has had the fuel pump replaced or work been done in that area is has been known to trap/damage a wire to the boost actuator where the mount has been removed/replaced. Well worth a look!
      It may be that the EDC limp home scenario and the Glow plug lamp are not related and this must not be discounted, although the wiring needs careful inspection. Depending on your viewpoint (and wallet) you may wish to buy a good code reader that will give you insight into what is going on – This is really an essential tool as it will give you pointers as to where to look for problems. Obviously this will involve some investment but if you choose the Autel 702 Elite you can maybe look toward recovering some of your investment by offering to read other European cars in the covered range, I suppose these would be labelled in some cases as ‘specialist’ in the US:

      Covered Range Autel MD702 Elite

      Benz, Smart, Sprinter, Maybach, BMW, Mini, VW, Seat, Skoda, Audi, Opel, Land Rover, Jaguar, Volvo, Porsche, SAAB, EU Ford, Vauxhall.

      This tool will be your ‘eyes’ in finding any problems and although may not point directly to the fault it could help lead you to a solution. Often without this tool frustration and uncontrolled money disposal result very quickly – probably enough of that pain has already been experienced I would imagine. My money is on a wiring fault between ECU and one or more sensors in the engine bay (this could be intermittent. The repairing garage/shops will have reset the ECU and cleared codes before you had the vehicle back,the fault would then occur again after a short period of driving. Once triggered some levels of faults cause EDC Limp home operation and can only be reset by using a ‘code reader’ and any fault logged would remain until cleared) and perhaps an unrelated ground wire/corrosion problem with the wiring to the glow relay.
      Let me know what you find.
      All the best
      Steve

      • From Graeme Power on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

        I still have a sense of humour about this, the Mercedes Workshop seems to think I have a bottomless wallet for their technicians? to learn fault finding. When I bought the van it had several glow plugs broken off in the head. I had that repaired to find the glow plug light on and I then had the glow plug relay replaced and that gave me about two months of trouble free motoring. Then the EDC started to come on and you have seen the chronology of that till I replaced the ECU and now they both come on together, my question is…
        I turn on the ignition and the lights come on to tell me all is good, I start the car and all the lights go out for about three seconds and then the EDC and Glow Light Come on and stay on, Does this mean the computer reads a problem and reacts in that 3 seconds.
        What I am trying to accertain is. That three seconds that the lights are out for, is that the computer reacting to a newly found fault or is it just a process of starting. I want to know that so I can decide if the fault code clears on its own, that would be a big help if it did as I could then look for the fault and know when I found it as the lights would simply not come on, I have driven Mercedes vans like this before that went into limp mode whilst driving but cleared on their own some 2ks later only to return the next day and clear themselves again intermittently. I would like this fault to be one of those so I dont need Mercedes to clear the codes for me.
        Graeme

        • From Graeme Power on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

          PS, I forgot to ask, is this the Autel I need to be looking at eBay item 291011629694, I think I will require adaptors to fit the round plug on mine though. I found a bit of oil in the egr Valve area is that something to worry about.
          Graeme

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            From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

            Hi Graeme,
            The Autel is the one on ebay. Since there were a couple of CAN protocols used on the Vito (ISO 9141 and KWP) I hold my hands up to knowing which you may have, although the Autel covers both I would just drop Autel an email and ask their compatibility advice, they are a good bunch and don’t take too long to reply to an enquiry. There are many custom ‘adapters’ (like this: 221081471709) available cheaply on ebay that convert the newer connector to either of the two older rounder types. Its just a matter of selecting what you need.
            I hear what you say about the EDC lamp, sadly also there is a group of faults that cause limp home and no EDC lamp lit, so there are many combinations and severity. Unless you know what you are dealing with its foolhardy to assume the level of fault you are dealing with. I think the delay of lamps illuminating you see on starting is the normal cycle of check lamps and doubt that the fault has gone away temporarily. It probably needs clearing down and re-reading to start any diagnostics. As I have advised many times, the reported faults on the code reader often indicate the result of a problem and not necessarily the cause, especially with component/wiring failure – but its the best place to start.

            Hope that is some help.
            Steve

  • From TyO on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

    Thanks for writing the post.

    I have a 2007 Vito 111 W638 6-speed. The gear change between first and second is really, really ‘clunky’ whilst mobile. I’ve noticed that there is almost a small ‘jump’ out of 1st and 2nd gears as well. The workaround is to take gear changes really slowly which is a bit frustrating on hills. Whilst parked the gear changes are consistent through the gearbox though I wouldn’t say they were smooth.

    I changed the oil as suggested in this post however unfortunately I’ve noticed no change at all. The garage is my next port of call though I have a bit of a trust problem as I’m not really motor savvy.

    I did buy the hex tools in the link, however the set came short of a 17mm tool which was required for the drain plug.

    Thanks anyway.

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      From Steve Ball on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

      Hi Tyrone,
      Sorry the tool link didn’t work out, they must have changed the pack contents or original link I posted to Laser tools. I will amend that now. I realise you say you can select gears while stationary OK but I wonder if you have looked at the selector cable alignment/adjustment, you will find the MB details on setting this on my website here. This is well worth a look before moving on. The garage will likely tell you the vehicle will need a clutch as spinning clearances of plate and flywheel do reduce as wear takes place. This drag can cause the issue you are seeing – from experience and the reports of posters on here, this is not a definite cure. A few people have had the clutch replaced on recommendation, only to find the synchros internal to the gearbox were worn and needed further work.
      Before ‘signing on the dotted’ line just be aware that this could be the outcome even if the clutch is replaced then make an informed decision.
      Please let me know how you get on.
      All the best
      Steve

      • From Tyrone Owen on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

        Hi Steve,

        No problems with regards to the link.

        I’ve got a bill for a clutch replacement for back in 2010 so I’d be disappointed if that was the issue. I’ll try the selector cable adjustment before taking it into the garage. Just to display my ignorance, what measuring tool would I use to ensure adjustments are correct. I’m going to feel pretty stupid if you say a ruler! The recommended measurements are in millimetres so I would have thought the tolerance is quite low.

        How big a job to resolve is a problem with the synchros? I’m just wondering if the adjustment doesn’t work maybe I should jump straight to the synchros as the clutch has been done fairly recently.

        Thanks

        • From Philip on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

          Hi All,

          I’m only putting the info below now because i wanted to monitor my solution first.
          Also it’s not a permament fix at all, but it can buy you precious time

          One thing i noticed on my Vito 115 CDi (W639) is that there must be some slow leak of clutch hydraulic fluid / or the master / slave cylinder orings have worn. What i did to prove that it was not wear of presure or clutch plate on my car was the folloiwng:
          1) I took an old hand oil lubrating can which has that “thumb pump” action on it. Normally used eg. for lubricating pistons & rings during block assemby .
          2) filled the oil lub can with breakfluid (not oil)
          3) Removed the TIP of the hose attached to the oilcan
          4) The pip snugly fits over the bleed nipple for the clutch
          5) then i loosen the bleed nipple slightly
          6) then i pump break fluid back up the bleed nipple until it starts leaking out the side threads of the nipple then i immediately close the nipple.

          Result of my actions was immediately my clutch pedal was sitting a bit higher, and the clutch travel was better and the gear selection was better too.

          This solution lasted for more than a month and half and quite a lot of miles before i have to top up the fluid again.

          Regards,

          • Avatar photo

            From Steve Ball on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

            Interesting stuff Phillip, this goes to underline that poor engagement of gears can be due to a dragging clutch, this being one cause of such a problem. Thanks for the info and do report back.
            All the best
            Steve

          • From Philip on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

            Hey Steve,

            Pleasure – will give more feedback when i have more

            regards,

        • Avatar photo

          From Steve Ball on Poor First Gear Selection - Manual Gearbox Problem W639 Vito - Cure

          Hi Tyrone,
          I you could make a plastic measure of the correct dimensions, like a slip gauge.
          I have just dug this out of the web for you and its worth a read, the problem could reside in the selector cage on the gearbox itself. There are some informative suggestions here that could just help you out before biting down on the expensive exchange gearbox route (unless advanced in repair of gearboxes I would not attempt the synchro repair myself – my own view is get a service exchange box if you require one. It will have a warranty and have had all worn parts replaced, not just the offending synchro hubs.) My 2 cents worth, but its up to you.
          Let me know how you get on.
          All the best
          Steve

  • From javier on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Love this article. Would you please tell me if the boost actuator valve is the same thing as boost pressure solenoid? Thanks in advance for your time…

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      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Hi there,
      Indeed you are correct, the terminology may be slightly different but the device is the same. Glad you found the article of use.
      All the best
      Steve

  • From John on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Hi i have a vito 108 cdi its also throwing a code p1470 as well as 1188,1636,1622
    I have replaced the lift pump the high pressure pump fuel pressure regulator and today the boost actuator valve still can’t seem to fix it
    as soon as the key goes on the ddc light comes on and goes into limp mode
    i am running out of money fast any idea what else i can do to fix this
    could it possibly be the Map sensor as its loving a code even before i start it and when i clear it it comes back straight away?

    • Avatar photo

      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Hi there, sometimes when using a code reader other than the MBStar it throws some generic codes, often for faults that do not in reality exist! Just to be aware as I am unsure what you are using to read/clear codes. I think the issue is without doubt electrical and not in any way mechanical or directly related to the turbo actuator or its control transducer. You will have to check the location out, but there is a supply fuel pressure switch located before the low pressure pump (its like a brass T piece in the fuel line with a single 2 prong electrical connector) I have known this be faulty or the connector bad and does immediately set the ECU to Limp Home. Check it out although its exact location is unknown by me on your model. Remove the electrical connectors from the ECU and inspect the connection pins for corrosion, rectify if an issue. I fear P0107 would have been expected if there was a possible MAP issue but these are a common fault component and if possible worth substitution to be sure. I am assuming the vehicle idles and starts OK – but if not check injector connectors/wiring and also cam position sensor plug and wiring although neither seems indicated as an issue by the absence of their respective trouble codes.
      Please let me know what you find.
      All the best Steve

      • From John on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

        Hi thank you for that. I am using a G scan which isn’t the best for Mercedes but that’s all I have! The sensor is on the fuel pump which got replaced when the pump did and they even have me another new pump with another new sensor to try but same problem. I think it’s faulty ecu at this stage as the second I turn on the key even without starting it it logs the codes. It starts and runs great so the rest of the system is fine. As I unplug each sensor one at a time it logs an entirely different code related to that sensor so so far everything else seems ok. The other thing I noticed is my scan tool doesn’t show the rail pressure and shows coolant temp to be -237 deg now that could be just having issues communicating with the scan tool but I am pretty sure it use to read everything ok. Which also points to a faulty ecu. Also has anyone changed an ecu before as my numbers don’t quite match up to anyone else’s will it still work?

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          From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

          Hi John,
          Maybe you are correct, its a pity you could not test/substitute with another known good ECU before shelling out the money. If you cannot get fixed up locally Ebay could be your best bet for a unit with matching part numbers, there are a few engine/spec variants and you should get one of the same part code/year of manufacture to be sure. There is a chance that there could be a loom issue and I would try and prove at least a selection of sensor connections from the ECU plugs to the device connector with a test meter before investing in a replacement ECU (Circa another £100+) If one wire is short, grounded or otherwise down to engine neg/ground untold faults could result due to the internal regulated voltage outputs from the ECU being effected.
          Good luck and I hope you get it sorted – it seems sadly its not going to be an easy fix. Let me know how you get on. All the best Steve.

          • From John on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

            HI yeah i took it to a Mercedes dealership yesterday they put it on the genuine scan tool and looks like either its damaged wiring to the valve on the pump or faulty ecu. One of the guys who works there said he has seen where the engine mount has been removed to change the pump and the wire for the valve be squashed when the mount is put back in place because it runs up close to it at the rear of the engine so today I’m going to pull that all apart check the wiring with a multimeter and then failing that its a bad ecu!
            I have been searching on Ebay for a kit but mine has a different number to all others i seem to be looking at. Apparently mine has a 110 hours power engine in it and is manual where usually they are only in an Auto so if i get a kit with different numbers it will work but i could end up with only 90 horses! saying that its going to go a lot better then limp mode!!
            thanks so far for all your help

  • From Karina on Mercedes Sound 5 Auxillary Audio Input Modification

    Can you think of any reason why our sound 5 radio will play CDs okay but can’t seem to pick up a radio signal? Even manual tuning won’t pick up the station – does this mean that the antenna has somehow been disconnected or is there a setting I should change?

    • Avatar photo

      From Steve Ball on Mercedes Sound 5 Auxillary Audio Input Modification

      Hi Karina,
      It sounds likely as if the antenna has become disconnected in some way, this could either be a simple disconnection at the rear of the set in the dash or the connection to the screen antenna has broken or elements corroded (if you have a screen antenna). There is a chance the cable/connector has become damaged faulty. Its worth pulling the radio and having a look behind. Once removed from the dash, you can always push a length of stripped wire directly into the centre of the radio antenna connector/socket and see if you can get a radio station – this will test the radio receiver in the head unit is functioning OK before any further fault finding.
      Good luck, Steve

      • From Robert on Mercedes Sound 5 Auxillary Audio Input Modification

        Hi
        I have a 2014 sprinter with the audio 10, I was considering buying a Audio 15 that has been removed from a mother 2014 sprinter, Will this be a straight forward swap or will this be locked to the van and need to be re programmed by Merc
        If it needs to be programmed etc is it worth the hassle or would I be better maybe just buying a aftermarket unit perhaps maybe with sat nav ( do you have any recommendations on units with and with out sat nav) possibly even for use with a reversing camera
        Many thanks in advance

        Many

        • Avatar photo

          From Steve Ball on Mercedes Sound 5 Auxillary Audio Input Modification

          Hi Robert,
          You have presumed correctly, no matter what radio option is fitted to the larer vehicles it will be coded to the ECU. A move to Audio15 is possible if you can find a car audio dealer who can disable the coding for you, this should cost £35-40 ish. Failing that you can often see decoded/defeated Audio15 units for sale on EBay. Because the opening in the dash is double DIN you can have virtually any set up you require in there! Alpine do some very nice screen based head units that have both fixed and retractable screens. Another GenIn poster Mike Somerfield from the US fitted a double DIN Android type head unit from China and had great success. The only thing to remember is that some of the higher end devices need external amplifiers to drive the speakers so make sure you research exactly the parts required and total up the final cost correctly.
          Good luck in your choice! Do let us know how it went.
          All the best,
          Steve

          • From Robert on Mercedes Sound 5 Auxillary Audio Input Modification

            Hi Steve sorry to trouble you again if I get a audio dealer to decode the audio 15 unit, would it just plugging and play so to speak or would it still need to be programmed etc by Merc
            (This is my own fault I should have spec it when I was ordering the van)

            Best regards robert

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            From Steve Ball on Mercedes Sound 5 Auxillary Audio Input Modification

            No probs Robert,
            Plug and play! Make sure you mention to the audio repair shop that you would like reverse camera and aux audio in enabled, they should be able to check this is active and if not make it so.

            Steve

  • From Dan Cowper on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

    Hi Steve.
    I have a 2002 Mercedes Sprinter 616cdi. It has the 2.7, 5 cyl turbo diesel eng. Firstly I would like to say that these small trucks are fantastic. My issue is that it will cut out completely on an irregular basis. By cutting out I mean you can be travelling quite happy at 100k’s/hr then all of a sudden engine stops sudden and all dash lights come on. Ususally within 10 seconds of coasting I can restart but this exercise isn’t much fun when fully laden and towing a trailer……also can happen unlaiden. I have had a scanner on it and the fault code that rings a bell P1187 Rail pressure monitoring deviation. I have been advised that a fault such as this can have the ECU shut down immediately. Could this be right? And if so or otherwise where do you think my problem lies? Have just changed fuel filter. Any help would be much appreciated.

    Thanks
    Dan.

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      From Steve Ball on Mercedes Sprinter Turbo - Limp Home - Diagnosis and Fault Finding

      Hi Dan,
      There is a chance that the fuel rail pressure sensor is giving problems. If its not the sensor itself then there is a couple of very cheap O ring seals on this sensor (sealing it to the rail) that perish and start to leak past giving pressure reading problems. Usually this is diagnosed as poor or none starting but I suppose could not be unheard of as a cause of intermittent stalling due to incorrect fuel pressure feedback. Its also worth looking at the wiring on the loom on the right hand side of the engine as if looking into the bonnet as it stretches from the block to the bulkhead it is known to be troublesome with chafing or broken wires.
      First port of call is to change the O rings, only a few pence and well worth a try!
      All the best
      Steve

  • From fredrik on Mercedes Sound 5 Auxillary Audio Input Modification

    Hello. I went to the mb dealer and he connected the computer but we couldnt get it too work. My sound5 doesnt have the amp on off in the menu. So we are back at square 1. No we have audio in from the phone but not audio out to the subwoofer.