ROUGH RUNNING

2005 Ford Expedition

Tiny

erikfial

October, 13, 2012 AT 8:45 PM

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.

FOUND 4236 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

3 Answers

Tiny

KHLow2008

October, 13, 2012 AT 8:56 PM

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

Tiny

erikfial

October, 14, 2012 AT 1:47 AM

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

Tiny

KHLow2008

October, 14, 2012 AT 2:33 AM

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?

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