Mechanics

STARTS THEN DIES, BUT WILL EVENTUALLY STAY RUNNING

1999 Pontiac Grand Am • 160,000 miles

I have a 99 Pontiac Grand Am 3.4L When I go to start it, it fires then dies, It will do this 3 or 4 times before I can keep it will stay running. And to get it to stay running I end up having to push the accelerator 1/4 to 1/2 throttle and hold the key in start position for a few seconds after it initially fires. After I get it to stay running it runs great.
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JHenriksen
December 26, 2011.



The first thing I would check for is codes have you done that yet?Also do you have a multimeter to do some testing?You could have a bad coolant temp sensor it would make sense for your symptoms.

Saturntech9
Dec 26, 2011.
I don't have a reader for the newer stuff. Yet. It Does it hot or cold

Tiny
JHenriksen
Dec 26, 2011.
Hi saturntech9. How about low oil level / pressure and the fuel pump is switched on by oil pressure? I don't know which years or models that applies to but sure sounds like how that system acted.

Caradiodoc
Dec 26, 2011.
Hey Doc, The fuel pumps that are integrated into the fuel pump circuit are done so as redundant power supplies for the pump. The relay will pre-empt the oil sender, unless it is bad.

Wrenchtech
Dec 26, 2011.
It wouldnt hurt caridodoc jhenriksen check your oil level see if its low. Also take it to a auto parts store like auto zone and have them scan the computer for codes. If you have any codes then let me know the exact code numbers not the code descriptions. Also a multimeter would be helpful to test things.

Saturntech9
Dec 26, 2011.
Oil level is good. I will get it scanned. I do have a mulitmeter.

Tiny
JHenriksen
Dec 26, 2011.
Alright let me know about the codes and we will go from there.

Saturntech9
Dec 26, 2011.
No codes, fuel pressure kinda dances from low to high 40s as I crank it over and its trying to start.

Tiny
JHenriksen
Dec 31, 2011.
Pull the fuel pressure regulator vacuum line off the nipple see if there is fuel coming out of the nipple.

Saturntech9
Jan 1, 2012.
Nope, its dry

Tiny
JHenriksen
Jan 1, 2012.
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