2002 Audi S4 Question Not Starting

S4INSF

MEMBER
2002 AUDI S4
6 CYL
AWD
AUTOMATIC
99,650 MILES

I was driving at about 30 mph and car stalls. I pull over and turn ingnition and the engine turns but does not start. I then had the car towed to my house and and hour later the car starts. Next day, it starts again. I then drove about 2 miles, got gas, and car doesn't start again. Waited about 45 minutes then it starts again. The tow truck driver suggested replacing my fuel pump and that should fix the problem. Is he right?

Thursday, October 9th, 2008 AT 7:56 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

He could be right-next time it refuses to start do below to determine if its fuel or spark issue

Get a starting fluid or ether and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it

Was this

answer

helpful?

Yes

No

Thursday, January 8th, 2009 AT 11:10 AM