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help please....... running issues


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yeh ive taken maff back and the coil pack but theres only so many excuses i can make up and im running outof other parts to blame it in than the ones im taking back! It wont start at all now. Was running on 4-5 cycls coming home' date=' then i cut out on a hill and wouldnt start. i managed to bump start it, and limp it home. It cranks now but wont fire. Surely lambda wouldn't make it not start?

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Crank Sensor dude..

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Vag coms showing clean well it was the other day' date=' haven't checked it since as it's s garage who are checking it and now it's stuck on my drive that's put an end to that. I'm just gunna have to bite the bullet and buy all 3. Crank cam and lambada sensor aren't I! Yet more expense! Lol

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not checking for fault codes, check to see whether the lambda is functioning correctly and giving plausible information to the ecu, otherwise youre just throwing money at it, which defies the point of DIY (doing it yourself (properly))

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Yeh the garage can. When you say properly what do you mean? As they have scanned it twice and it's clear.

Like Matt has already posted above, you may not be showing a logged fault but if it is in doubt you can watch it in "real" time and check the results. It is more of a fine art than clearing codes and waiting. There may be something throwing out weird numbers causing the problems. VCDS or vag-com is a very good tool.

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Checking and clearing fault codes is only half of fault diagnosis. Measured values need to be compared to real life values' date=' ie coolant temp showing -20 degrees on a 10 degree day is clearly wrong, but it is plausible to the ECU and it would not bring a error code up for it.

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exactly, nail on the head, youre looking for plausible information going to the ecu. i was working on a mk4 once where the ECU was being told a static figure by the lambda. it was a figure, but utter bs.

ive just realised who ive quoted lol obviously youd have known (in fact there is a VR6 im looking to buy whose ecu has been done by you)

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Alleujhia....................... Well after weeks of messing, tinkering, countless late nights after work I've sorted it! Turns out to he dodgy cam sensor! Always the last thing you change!!! Well coz alk the sensors are new it feels very crisp and quite nippy. Smiles all round. Cheers to all you guys for your help.

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