Hi there,
My C4 AAR 2.3E 1991 Audi 100 refuses to start after being totally OK the day (and many years) before. It cranks OK. Battery is fully loaded. I've checked the ignition (coil cable sparks 15 mm against motor bloc, plugs spark). Seems thus OK but I do not know if the timing is OK though. I suspect the fuel pump relay (I hear the pump running for 2-3 secs every time I turn the ignition key, then it stops). I want to bridge this relay to prove the point. Where is it in this model ? It is not in the big fuse box in the bonnet (almost empty if you except the "retarded fan relay"). And, by the way, where is the pump ? Not under the back seat, in either case. Thanks for any help !
Flipflup