VW Passat

ANDY51

MEMBER
2002 VOLKSWAGEN PASSAT
6 CYL
2WD
140,000 MILES

I have a 2002 Passat. Occassionally it will not start or have difficutly starting. It will crank but not fire. After trying for a couple of minuites, I will tap the accelerator and it will sometimes start. Other times, I have to let it sit 10 minuites and then start. When this happens, it runs rough for a few seconds, then run fine. Thoughts?

Monday, February 21st, 2011 AT 12:02 AM

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-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, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing.

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Monday, February 21st, 2011 AT 12:05 AM

ANDY51

MEMBER
2 POSTS

Thanks! I will try and find someone to help when this happens again. The two mechanics I took it to, said they could not diagnosis without it not starting, and it will go weeks working okay.

Thanks again.

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Monday, February 21st, 2011 AT 12:19 AM