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Gone full circle on this one and now solved it. Fitting a new timing chain I think was a worthwhile exercise, but it didn’t fix the P0020 errors. I then started getting the P0365 and P0366 errors again, those relate to circuit and performance of the exhaust camshaft position sensor. Having...

Well, some blood, sweat and fortunately not too many tears later I have a new timing chain, tensioner and two of the three guides replaced. To change the third chain guide (on the inlet side of the engine) looked to require the whole of the front timing cover to come off, something I wasn’t...

Hi Veniemin, I've still not got a conclusion on this one. I'm now getting engine management fault codes relating to the cam adjusters and it has been suggested the timing error is confusing the ECU into thinking there is a fault with the cam adjuster magnets. I've got a chain kit on order with...

Thanks for the suggestion BlackC55. I've just one other thread on the forum so far and that's about the timing chain. Having read horror stories about chain stretch and my mileage at 120K, coupled with noise from the cam adjusters on start up, I did look at the chain just recently. Timing for...

Grateful to anyone who can help me with a CEL problem. The car is a 2004 C180K with M271 engine. For some time the CEL light had been on with a circuit fault for the exhaust camshaft position sensor. Checking the output of the sensor with a 'scope confirmed it was faulty. However, replacing it...

Grateful for some advice if someone can help. I have a S203 with the M271 engine in 180K guise on a 53 plate. It's covered a reasonably trouble-free 120K mostly motorway miles and up until now has been MB dealer serviced, but home fixed if anything has failed. I'm ex-motor trade, but these days...