MY 1999 PONTIAC GRAND AM WONT STAY RUNNING WHEN ...

1999 Pontiac Grand Am

Tiny

Anonymous

January, 5, 2013 AT 5:22 PM

My 1999 Pontiac grand am won't stay running when it warms up. It will start cold, but engine warms up it quits. It does idle a littl rough, and after a out 20 minutes it will start and run until it works up again. I have changed the throttle position sensor and the mass air flow sensor. What could be the next step.

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