2 SPARK PLUG IS MIS-FIRING

  • Tiny
  • josephmanuel69
  • 1999 Pontiac Grand Am
  • 143,000 miles

I OWN A 1999 PONTIAC GRAND AM SE WITH A 2.4 L TWIN CAM. MY #2 SPARK PLUG IS MIS-FIRING ON AND OFF. I CHANGED OUT THE PLUGS, PLUG BOOTS, COIL PACK, CAM SHAFT SENSOR, FLUSHED THE MOTOR, WHAT ELSE CAN I TRY?

Friday, March 30th, 2012 AT 4:24 AM

4 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Check or replace the plug. Make sure the injector is getting power.

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Friday, March 30th, 2012 AT 4:26 AM
  • Tiny
  • josephmanuel69
  • Member

The injector is getting power, and the plugs are new. It runs good if I disconnect the cam shaft sensor.

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Friday, March 30th, 2012 AT 4:39 AM
  • Tiny
  • josephmanuel69
  • Member

The service engine light and trac off light is going on and off now. The car is still running poorly

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Sunday, April 1st, 2012 AT 5:34 PM
  • Tiny
  • josephmanuel69
  • Member

ALL ALONG IT WAS THE INTAKE MANIFOLD GASKET!

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Thursday, August 16th, 2012 AT 5:31 PM

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