FrankZerox

Cheers. I ll change the MAF for what it costs. No idea if ECU has been messed with but I think theres a tool in the VCDS menu that can reveal if it has.

I did and injection quantity deviation measurement, can only be done on tickover though. Came up with following Cylinder 1 -52us Cylinder 2 12us Cylinder 3 36us All of which means nothing to me sadly

Yes sorry . The tank was drained and new diesel plus correct injector cleaner added

Hi everyone. Wondering if anyone has any suggestions where I should go next. Bought a Fabia 1.2 tdi greenline non runner. 161K miles and not been used for 3 months . Well thats what I was told. Would just crank over but not fire. Plugged it in VCDS a.d came up with loads of faults. Got it running and fitted new Fuel pump regulator, fuel rail pressure sensor, heater plugs , timing belt water pump and cam sensor, crank seal and crank sensor and clutch, fuel and oil filters etc etc. During this time the car would exhibit crazy starting behaviour. You could come to it and it would just crank. Lock it and unlock it and it would start but you couldnt raise the revs about tick over. Switch it off and immediately restart it and it would be fine and rev and drive. Didnt always follow this pattern and sometimes was OK. I also had an auto locksmith come out and make and program an extra key. Fitted new EGR cooler and Turbo and now it exhibits the same behaviour as before but if you try and rev it up it goes into a misfire at approx1200/1400 rpm. Checked all connections including vacuum pipes to components. Also given throttle body a thorough clean. Tank fuel pump has been checked and is OK. When scanned by VCDS theres no faults showing on the engine but on addres 44 Steering Assist its showing 01314 Engine control module 49-10 No communication - intermittent. I ve been told that on these early models not everything was covered on scans. To be honest I m getting completely stumped. Any suggestions gratefuly received thanks