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.

Do you
have the same problem?
Yes
No
Monday, October 15th, 2012 AT 5:45 PM

3 Replies

  • Tiny
  • KHLow2008
  • Expert
  • 41,997 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?

Was this
answer
helpful?
Yes
No
+1
Monday, October 15th, 2012 AT 6:53 PM
  • Tiny
  • robert54
  • Member

My engine is V6 3.0L.

Was this
answer
helpful?
Yes
No
+1
Tuesday, October 16th, 2012 AT 6:15 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,997 posts

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

Was this
answer
helpful?
Yes
No
Tuesday, October 16th, 2012 AT 7:41 AM

Please login or register to post a reply.

Similar Questions