1999 1999 Jeep Grand Cherokee Miss Fire under load

Tiny
COLBORN1
  • MEMBER
  • 1999 JEEP CHEROKEE
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I have taken my Jeep to two different mechanics due to a miss fire I get when starting up an incline. Both mechanics have said there is no codes shown. One was a Dodge dealership. They said they had no clue. I am getting frustrated. No one can help me. I cant get rid of this miss fire. Can someone please help me?
Monday, August 18th, 2008 AT 12:40 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Monday, August 18th, 2008 AT 12:52 AM

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