Have scan code P300, P0304, P0305, P0306, P0171.

Tiny
ROBERT54
  • 2006 FORD FUSION
  • 130,000 MILES

I have check for vaccum leaks none, change spark plugs, and replaced coils. Still get the same engine code, the check engine light came back on after cleared. The engine temp is normal.

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Monday, October 15th, 2012 AT 5:45 PM

3 Replies

Tiny
KHLOW2008
  • EXPERT
  • 41,940 POSTS

The system is running lean with random misfres and cylinders 4, 5 and 6 seems to be badly affected.

Which engine do you have?

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Monday, October 15th, 2012 AT 6:53 PM
Tiny
ROBERT54
  • MEMBER

My engine is V6 3.0L.

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Tuesday, October 16th, 2012 AT 6:15 AM
Tiny
KHLOW2008
  • EXPERT
  • 41,940 POSTS

Check the PCV valve and its hose for damage and vacuum leakages.

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Tuesday, October 16th, 2012 AT 7:41 AM

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