engine stalls at idle ?

2004 PONTIAC GRAND PRIX

80,000 MILES • 6 CYL • FWD • AUTOMATIC

DANAKUSISTO

MEMBER
1 POST

my car starts fine on a cold start but when it is warm and i go to start it it stalls. i have to push on the gas to keep it running but now that is starting to not work. it took me 6x's to get it to start the other day, i pushed on the gas and it still didn't turn on.

Mar 2, 2010 at 1:27 PM

SQM

✓ASE Certified Mechanic
6,383 POSTS

Hello,

It sounds like you might have a faulty crankshaft position sensor. When you have a faulty crank sensor the engine will not produce spark to the plugs.

Due to engine vibration, heat and the constant generation of electromagnetic energy being produced internal windings can become brittle and break causing a direct or intermittent short circuit of the sensor which will cause the engine to stall.
This failure may or may not cause the check engine light to come on and set a trouble code for this problem.

Here are some helpful articles on crank sensor:

https://www.2carpros.com/articles/car-cranks-but-wont-start
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Please let me know of any questions.

Thank you.

Aug 3, 2021 at 11:49 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.