john court
01-10-2007, 08:49 PM
I have a 95 passat estate with a 2E engine with Digifant 1.23 ecu
A while back the distributor failed so I fitted a new one,timing by the rough guide given in the Haynes manual and then expected the auto adjustment of the ecu to fine tune it. I could not find any timing marks for a strobe so tried to improve running by moving dist to get best result. not very successful. Also played with idle screw and C.O.adjuster by air flow meter.
Bought a VAG-COM which showed no faults and the tickover timimg was fluctuating between 2 and 9 degrees maintaining 852 r.p.m
I moved the dist and it showed same angles and same revs.
Is the trigger pulse for the crankshaft position taken from the sensor in the dist, if so, the ecu effectively assumes the crank is wherever the dist says and vag-com reads from the dist position, irrespective of the crankshaft position:?
So,
How is the distributor set , then the tickover speed screw, then the c.o. -I may need analyser
A while back the distributor failed so I fitted a new one,timing by the rough guide given in the Haynes manual and then expected the auto adjustment of the ecu to fine tune it. I could not find any timing marks for a strobe so tried to improve running by moving dist to get best result. not very successful. Also played with idle screw and C.O.adjuster by air flow meter.
Bought a VAG-COM which showed no faults and the tickover timimg was fluctuating between 2 and 9 degrees maintaining 852 r.p.m
I moved the dist and it showed same angles and same revs.
Is the trigger pulse for the crankshaft position taken from the sensor in the dist, if so, the ecu effectively assumes the crank is wherever the dist says and vag-com reads from the dist position, irrespective of the crankshaft position:?
So,
How is the distributor set , then the tickover speed screw, then the c.o. -I may need analyser