P0300 SLIGHTLY ROUGH IDLE LONG TERM FUEL TRIM ...

  • Tiny
  • Anonymous
  • 1998 CADILLAC CONCOURS
  • 61,000 MILES

P0300 slightly rough idle long term fuel trim high bank 2. Any help would be appreciated

Monday, December 17th, 2012 AT 4:10 PM

1 Reply

  • Tiny
  • Hmac300
  • EXPERT
  • 45,702 POSTS

Check fuel pressure first shold be 48-55 psi.

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Monday, December 17th, 2012 AT 4:13 PM

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