MY VAN IDLES ROUGH AND ENGINE LIGHT FLASHING ...

  • Tiny
  • Anonymous
  • 2002 Pontiac Montana
  • 160,000 miles

My van idles rough and engine light flashing with code P0304. I have swapped coil, repaced plugs and wires and no change. I have noticed in the past that the exhaust had a wierd smell I cant say it was rotten eggs and where I park in the driveway there is a black mark in the snow at tail pipe. I had a complete head gasket job a year and half ago.

Thursday, March 7th, 2013 AT 3:26 PM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 43,570 posts

Check your fuelpressure shold be 52-59psi

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Thursday, March 7th, 2013 AT 3:51 PM

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