2004 grand am won't start - Engine Troubleshooting


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2004 grand am won't start

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Jarefo83
New User

Mar 20, 2017, 5:05 AM

Post #1 of 3 (2617 views)

2004 grand am won't start	Sign In

I have a 2004 pontiac grand am 3.4 v6. I just replaced the fuel injectors, spark plugs, and egr valve. Now it doesn't want to start. It cranks for 6 or 7 seconds smelling like a buttload of gas is being dumped before firing. Once it's running it has more power than I ever did before but I'm not sure what the starting issue is. It was starting perfectly before the new (not cheap) parts. I'm wondering if the fuel injectors are defective. I'm at a complete loss. According to the code readers it's running lean and misfiring. Any ideas on what the issue could be?

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 20, 2017, 7:01 AM

Post #2 of 3 (2615 views)

Re: 2004 grand am won't start	Sign In

What prompted you to replace injectors in the first place - just curious?

IDK - with this so far I'd check fuel pressure is right and holds just key on engine off AKA = KOEO test.

How much "stuff" got unplugged to do this. Double and triple check all your work and what was moved and unplugged that it's all OK again.

More is why the EGR? If you get codes telling you something know it doesn't mean that item is the problem rather the circuit has detected a problem. Smelling fuel from extended cranking does suggest it not firing it but there perhaps too much to start as in flooded. It might be and probably is. I would try foot to the floor first try should shut off injectors and let up quickly while cranking it might instantly start when you let go. Just some info to zoom in on this. It's going to throw codes and more coming if flooding out like that.
All four injectors wrong? Maybe - did the part #s match for this?

T

kev2
Veteran
kev2 profile image

Mar 20, 2017, 7:11 AM

Post #3 of 3 (2607 views)

Re: 2004 grand am won't start	Sign In

post all the current code numbers.
As suggested - fuel pressure test - then with KOEO observe pressure drop - ie drops @Xpsi in 5min.
Then it will be basic automotive 101
Is there spark? several plugs
FUel pressure? with a gauge
injector pulsing? with a noid light
then if all ok
compression check
vacuum reading

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