SPONSORED LINKS

1999 Ford Expedition

Tiny
PATRICK SULLIVAN
  • MEMBER
  • 1999 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 186,000 MILES
My wife's Expedition starts vibrating during slight acceleration with what seems to be a loss of power or surging. I can accelerate through this and it seems to go away while maintaining a steady speed. The check engine light came on the other evening but I disconnected the battery to check other items and the code has not reappeared.
The engine is the 5.4L Triton. In the past two days I have replaced the spark plugs, checked the resistance on the coils, replaced the fuel filter, and cleaned the EGR valve. I sprayed WD40 around all hoses and I don't hear or see any vacuum leaks.
Any suggestions?
SPONSORED LINKS
Thursday, May 27th, 2010 AT 10:03 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Those had alot of problems with coils shorting intermittently or under load. The PCM may have stored the code in the memory codes, otherwise your best bet may be to get on the road and replicate the problem to get it to light the check engine light. This will most likely point towards the cylinder that is having the problem
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, May 28th, 2010 AT 8:17 AM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE

Sponsored links