hey, so today my abf decided to die? In the morning car shut down 6 times, if i give a bit of gas it starts to stutter reaal hard, but if i slam on gas it gets through it. On a mid day stutter got lower but it stills stutters like crazy when I give some gas. I'll have VCDS diagnostics coming my way tonight. Any idea what the problem could be? And what should I do to see some useful live data on VCDS? Thanks in advance
crank sensor would be high on my list, if you check the engine rpm measuring block this is your crank sensor signal. if the crank sensor cable looks damaged or sensor is cracked just replace it put the label files in as well makes reading the sensor data much easier: https://clubgti.com/forums/index.php?threads/vag-com-abf-digifant-3-1-and-3-2-label-files.199583
We are thinking it might be a distributor fail Fauts are G145 cylinder 1 recognition sender (no signal) Lambda probe G39 (no signal)
Do both the codes come back once cleared? try unplugging the distributor, if it runs much better then replace the distributor or the hall sensor inside if you can find one
Lambda dissapears for a bit but it comes back, while other fault stays all the time, we opened distributor cap, it had a bit of oil inside and its looks like its a bit melted inside
alrighty get the distributor sorted and see how you get on, if you unplug it the engine should run fine but you'll loose a little performance/economy. without the distributor the engine switches to a batch fire map, in my experience its still pretty pokey but not a smooth on the throttle. with lambda unplugged it runs ok as well, but not as smooth at idle and on/off throttle in traffic. for this code check for any obvious damage in the wiring, but if its never been replaced in your ownership it might just be time to get a new one. You can use bosch universal type LS03 which comes with a crimping block to attach the original plug onto it, sometimes works out a bit cheaper than a bosch direct fit one but not always
We changed the distributor cap and that thing inside it( i dont know what its called in english), car runs fine now, but it it still stutters a bit from time to time when accelerating, we have changed lambda sensor before.
hall sensor ok if the distributor code is gone for gone but lambda is still flagging up then check the wiring to it next
There wasnt a distributor code, i had typed before here what codes i had, but distributor change helped, we have changed lambda, hall sensors, spark wires and spark pluges not so long ago
Oooh thank you, that changes a lot haha, i need to plug diagnostics again today to see what faults there are
Ok so I just had diagnostics plugged in G145 comes up no matter what, but car now runs and it runs better than ever before :/
i guess since intermittent distributor fault is now permanent ecu is now ignoring it rather than switching between maps as the signal comes in and out. actually when you said 'the thing inside it' did you actually mean the rotor arm whi9ch spins round inside the cap, rather than the sensor inside the distributor which you need to split the unit down to replace... if you didn't change the hall sensor inside the distyributor and you're 100% sure the wiring to it is ok then that would be the next job, if not the entire distributor assembly. note it has to be an ABF distributor, a KR/9A/PL/6A/etc one wont work
