Mechanics

PONTIAC GRAND AM SPARK PROBLEM

1993 Pontiac Grand Am

My 93 grand am starts and runs for about 15 minutes then dies, won't start again. I have replaced the plugs and wires, battery, idle air sensor and the fuel pressure regulator and the fuel relay. I am getting 40 psi from the fuel pump. What could cause this?
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Coldsteel9mm
December 15, 2012.



40 is about the minimum. What is the pressure when it dies?

Roy

ASEMaster6371
Dec 15, 2012.
Sorry that was a misprint, the pressure is at 45 when starting and when it dies. It starts and runs for 15 minutes and gets to temp and dies, it cools off and starts and runs again for 15 minutes and dies again. Only paid 800 for this car and have about 300 in it.

Tiny
Coldsteel9mm
Dec 15, 2012.
Sounds like you know why they sold it now.

Find out if it has spark when it quits

Roy

ASEMaster6371
Dec 15, 2012.
How do I do that?

Tiny
Coldsteel9mm
Dec 15, 2012.
Pull off a spark plug wire to see if there is any

Roy

ASEMaster6371
Dec 15, 2012.
While its still running?

Tiny
Coldsteel9mm
Dec 16, 2012.