My 1999 Pontiac Grand Am won't stay running when.

Tiny
ANONYMOUS
  • 1999 PONTIAC GRAND AM
  • 125,000 MILES

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.

Saturday, January 5th, 2013 AT 5:22 PM

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