ROUGH RUNNING 2005 EXPEDITION

  • Tiny
  • erikfial
  • 2005 Ford Expedition
  • 140,000 miles

2005 expedition blew two codes for cop's. Replaced and replaced plugs, no codes now however, it still has hiccup while idle and at coast at highway speed. Repaced VCT's both sides still running rough, not while accelerating just at slight pedal pressure.

Saturday, October 13th, 2012 AT 8:45 PM

3 Answers

  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

What were the codes retrieved? Are the codes still there?

Was this
answer
helpful?
Yes
No
Saturday, October 13th, 2012 AT 8:56 PM
  • Tiny
  • erikfial
  • Member

0300, 0355, 0358 I beleive if I remember correctly. Anyway I reviewed to cylinder 5 and 8 coil fault.

Was this
answer
helpful?
Yes
No
Sunday, October 14th, 2012 AT 1:47 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

The codes should be interlinked and now that the coils were replaced they have been rectified. The hesitation and rough idling could be due to low idling speed.

Try cleaning the throttle body and IAC and retest.
Are the spark plugs of the recommended specifications?

Was this
answer
helpful?
Yes
No
Sunday, October 14th, 2012 AT 2:33 AM

Please login or register to post a reply.

Similar Questions