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View Full Version : dead a4! crank sensor?...



robbie 911
12-09-2007, 06:30 PM
Hello people :) just found this site!! hope fully some one can help us out with my problem!! A4 1997 V6 2.6 ..THE PROBLEM IS IT WONT START!! :( was running fine then refused to start one day.. cranking over fine, key code being accepted,fuel pump priming and running when cranked,.. no spark!!.. didnt appear to have any pwr to coil packs...changed ign amp module but no joy... checked all connections to sensors and earth points, checked ecu for moisture ingress and connectivity.. all appear ok....still no spark.. been scanned at audis but no codes stored or found!!.. tried own scanner still no codes..:zx11: ..getting a bit bored spending money on the beast.. and getting no results!!... weird thing is somtimes if its towed it will start and run ..as rough as hell mind..then its a lottery whether it will start again!!:mad:..
does anybody know the sequence off events with regard to coils being powered?.. eg does the ecu require a pulse from the crank sensor before it will pwr the fuel pump to prime and run? any sudgestions would be most appriciated:confused: kind regards robbie