Comments and help given

 
Below you will find a chronological listing of collected comments and responses from the complete Mercedes Gen-In site, these detail many elements of help and support that has been offered to readers. Comments and replies are listed from the most recently published.

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  • From james thorn on Mercedes SRS Fault - Fix

    hi and thanks for the info, you say that you can just link out pre facelift cars? what do you mean and how?

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    • Steve Ball

      From Steve Ball on Mercedes SRS Fault - Fix

      Hi James
      The seat pad on earlier models that did not have child safety seat detection option (pre-facelift and other older models) had more of just a ‘switch’ type contact pad in the seat base. This can usually be simply be linked out if it is broken under the seat and the occupant system bypassed.
      Best regards
      Steve

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  • From Farai on Sprinter Fuel Rail Pressure Regulator Problems - Poor Starting

    hi Steve
    i am having a problem with my sprinter 311 cdi. on cranking the rail pressure dances between 70 and 150 bars according to diagnosis machine… when i remove the rail return pipe it has diesel coming from it. even tho the pressure is not yet enough in the rail. i have removed the rail pressure regulator and it is measuring fine (resistance) are there any visible movable parts on the valve that i should see and how do i test it to see if it is working properly?

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    • Steve Ball

      From Steve Ball on Sprinter Fuel Rail Pressure Regulator Problems - Poor Starting

      Hi Farai,
      If you have not blanked off the injector feed pipes then your test proves very little. It is entirely possible you have a failed injector that is leaking past and allowing the rail pressure to be a sub-starting value. Conduct an injector leak-off test and make 100 percent sure your injectors are sound.
      Hope that helps
      Steve

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  • From Hung Nguyen on Mercedes SRS Fault - Fix

    Hi Steve, I have a 2005 Clk320 and the srs light appeared when my car battery had no juice in it. I replaced the battery but the srs light is still there. Can you tell me how to fix this? Thank you so much.

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    • Steve Ball

      From Steve Ball on Mercedes SRS Fault - Fix

      Hi Hung,
      The SRS lamp on the C class of that year will have to be reset once triggered. It would probably have been battery voltage to the instrument console that dipped causing an indication similar to that of a disconnection of the pod with the ignition on. A diagnostic tool reset to the SRS system should get you back to normal.
      All the best
      Steve

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  • From Dan on Mercedes Sprinter - Engine Oil in Coolant Water - Oil Cooler Leak - Fix

    Steve
    I appreciate your input. Will perform and oil cooler swap and let you know how things go.

    Dan

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  • From Dan on Mercedes Sprinter - Engine Oil in Coolant Water - Oil Cooler Leak - Fix

    Hi Steve,

    I have a 2003 Sprinter and the fellow I bought it from stripped the #1 glow plug threads and just used a bolt to plug the hole and left the glow plug connected to the harness via a zip-tie. I was not smart enough to unplug it until I made time to re-tap/insert to fix threads and forgot about the exposed glow plug. About 5 months later, I believe the glow plug relay failed in the ON position (glow plug light stayed on during entire trips) and the glow plug got hot and fell on the harness catching it and the fuel line between filter and pump on fire. Van shut down and I put it out using a bottle of water.

    I replaced the harness, plugs, fuel lines, relay and oil cooler hose with new.

    I then proceeded to add back the coolant I drained and 3 extra gallons went in. Apparently it ended up in the oil pan. Some experts are telling me it might be the head gasket, cracked head or block, but after reading your article I am leaning on a burnt up oil cooler seal or a warped oil cooler or possibly unsolder-ed internal oil cooler plates.

    What are your thoughts? I really appreciate your help.

    Thanks much
    Dan

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    • Steve Ball

      From Steve Ball on Mercedes Sprinter - Engine Oil in Coolant Water - Oil Cooler Leak - Fix

      Hi Dan,
      I would have expected if the oil cooler were at fault there be oil in the water and not the other way round. Unless of course you didn’t run the engine at all , then we are looking for something more significant. Take of the oil cooler and have it pressure tested this will at least prove this component. It could be that the bolt in the glow plug hole has crashed the aluminium casting and somehow violated the water jacket to oil ways. Weird how this happened after the rebuild and not before but worth a look.

      Let me know what you find, its a puzzler!

      All the best
      Steve

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      • From Dan on Mercedes Sprinter - Engine Oil in Coolant Water - Oil Cooler Leak - Fix

        Hi Steve, and thanks for your reply.

        The engine was not started, since the small fire and parts replacement. So that is a good thing because water in oil can quickly kill the main bearings and seize the engine.

        No, the bolt covering the glow plug hole did not cause any damage, it was there for tens of thousands of miles. I reamed the hole and put an insert following strict procedures using a special kit. Everything was a breeze.

        The damage is strictly from the harness and fuel line fire. Everything worked flawlessly up to that point.

        I did talk to a diesel expert today and he said that almost always, when you have coolant going into the oil, it is a failed oil cooler.

        I am suspecting since the fire was next to the cooler, it overheated it and failed the rubber gasket or cooler plates. No head gasket or hairline crack would dump such large quantities of fluid so fast especially with a cold engine.

        I will have the Van towed back home from dealer because they suggested a warped head, failed head gasket, or head/block crack. But I would rather take my changes with the cooler first.

        What are your thoughts? Why do you suggest that coolers don’t fail with coolant in oil but the other way around? Due to pressure differential? My problem is on a cold engine. I wish I had X-ray eyes!

        Thanks for your time.
        Dan

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        • Steve Ball

          From Steve Ball on Mercedes Sprinter - Engine Oil in Coolant Water - Oil Cooler Leak - Fix

          Hi Dan
          The normal passage of ‘oil – into – water’ would be in the case of an oil cooler failure where the engine was run up. The higher pressure oil would migrate into the water system because it would simply overpower the coolant pressure by the order of several times if the engine was run. You now confirm the engine as not run, so a major breach of the coolant system into the oil is certain – just from where!

          The oil cooler is made from stamped aluminium sections pressed into a finned pancake. It is possible that it is damaged and the coolant as it is filled passes directly through the filter housing back to the sump. It may even flow back down the return into the sump. Four screws will take off the oil cooler and once off you will be able to test it. For a quick test, take off the screw on oil-filter cap, remove the oil filter element and look if there is water in the filter bowl. Top up the radiator bottle with water and wait to see if any water is running from the cooler into the filter bowl. Obviously water could be moving through the lower oil way to the sump but its worth at least a look to make you feel better!

          The orange gasket is not expensive for the oil cooler, its easier if you stick it to the cleaned cast surface behind the filter housing and position it in the locating tracks with some Victor Reinz gasket sealer (v sticky) Then offer up the cooler as flat as possible and once in contact with the gasket apply pressure to keep the gasket in position as you slide the cooler to align the screw holes. Once in position and two opposed screws have it held check with a torch and inspection mirror that the gasket is still perfectly in place before adding the other fixings and tightening them evenly. I wondered if this why the gasket was orange to facilitate checking as you will find its very dark down there!

          Hope that helps,
          All the best
          Steve

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  • From JD on Diesel Mercedes Sprinter Turbo Rebuild

    I tried this and now its back together but the vane adjuster is kind of tight once it was
    assembled. I cant see the vanes through the turbo like you said so not sure if its
    actually adjusting the vanes.

    The lever will move but it takes a lot of force to move. You said it is
    easy to move before assembly which it was. But you didnt say if it
    tightens up when installed.

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    • Steve Ball

      From Steve Ball on Diesel Mercedes Sprinter Turbo Rebuild

      Hi JD

      It sounds like the the sliding ring mechanism is not engaged correctly in the dog-bone lever that is attached to the end of the actuating lever. It will move without any force at all once clean and engaged properly, You should see what is going on with the vane edges from the exhaust side of the turbo scroll with an inspection mirror and torch.
      All the best
      Steve

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  • From Tendai on Mercedes C180 C200 Kompressor - Cam Chain - M271 Death Rattle

    Hi,

    Read your article and quite interesting. I am looking for the same parts for my c200 2005 model. Can you please kindly assist

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  • From Berrera on Sprinter Fuel Rail Pressure Regulator Problems - Poor Starting

    Hey Steve,

    My van broke down on the motorway the other day. When you spray easy start into the air intake manifold the van keeps running as soon as you stop spraying the engine cuts out. So obviously its a fuel issue.

    How can you tell if it’s the high pressure pump or low pressure pump? Or the fuel sensor on the end of the rail? is there anything I can do manually to cross any of these of the suspected list?

    One last thing, a guy came out just before this happened to drill a snapped injector bolt out, so I removed the injectors and found that there was some metal filings on the injector tips. Some metal from the drilling has definatly gone into the combustion chamber, is this really bad or will the filings just blow out of the exhaust?

    Thanks.

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    • Steve Ball

      From Steve Ball on Sprinter Fuel Rail Pressure Regulator Problems - Poor Starting

      Hi Berrera,
      Should be OK with the filings most should burn off and be blown out once it fires up. You would need to look at live data to see what was going on in detail using a compatible Mercedes Sprinter code reader, this is pretty much your eyes and prevents unnecessary parts swapping. Check fuel delivery and for leaks in fuel supply and return lines as primary fault finding exercise.
      Hope that helps a little,
      All the best
      Steve

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  • From Chris on Mercedes Sound 5 Auxillary Audio Input Modification

    Thanks for the reply Steve, like you say it must be the C bank connector. Presumably if i knew which pin it would just need a +12v feed for the illumination. I’ll have a play if I get time with the unit I have that displays the prod error, that or I’ll take it to a car hi-fi shop..

    Best regards, Chris.

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    • Steve Ball

      From Steve Ball on Mercedes Sound 5 Auxillary Audio Input Modification

      Chris,
      Thats just it, I am pretty sure the can bus signal will control the HA1111 illumination, signalled on the bus when vehicle lights are on. Pin 6 ‘old school’ was the +illumination connection but probably does not actually connect to anything inside the radio as it does not support this hard wire illumination facility. If your can bus is connected on the ‘C’ connector correctly, those automated functions via bus control will most probably work as designed.
      All the best
      Steve

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

    Hi I just want to find out on a mercedes 2.7 diesel where should the sensor gear gab be if piston one is on top…. and then maybe you guys can help out my enjine swing but no diesel is coming from the injectors

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    • Steve Ball

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

      Nick,
      The crank sensor is above the starter motor on the bell housing line. If when cranking your tacho needle jumps there is a good chance there is a signal from the TDC sensor. Often having an open diesel line will prevent any diesel being pumped, its a CDI failsafe. The most likely problem for poor starting is either no camshaft / crankshaft synchronisation (you will have an engine fault lamp on dashboard) or that the fuel rail is not allowing starting pressure to be reached. Sometimes caused by fuel regulator O ring failure. See here
      The camshaft sensor is on the valve cover at the rear and often plays up due to extreme environmental conditions over its lifetime, Hot and Cold.
      Any loom electrical problem or disconnection/short to any of the five injectors will prevent the others firing and a non start situation.
      Hope this helps
      Regards
      Steve

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