• Tiny
  • michael4585
  • 1998 Jeep Grand Cherokee
  • 6 CYL
  • 2WD
  • automatic
  • 95,000 miles

I have a 1998 jeep grand cherokee with a 4.0L it started idle surging from400rpm to 1000rpm and lost alot of power I replaced the disturabator, cap, rotor, button, and plugs and wires no change so I replaced the injectors and complete fuel pump no change so I replaced the crank shaft postion sensor it ran great for about 10 min. Then went to running bad again.

Do you
have the same problem?
Wednesday, February 9th, 2011 AT 3:11 AM

1 Reply

  • Tiny
  • JDL
  • Expert
  • 16,289 posts

Check for applicable trouble codes. Clean the idle air system. Several sensors share ref voltage and ground circuits. A problem with one sensor could cause issues with other sensors. At the moment, I'm not sure it is a sensor issue?

Was this
Friday, March 18th, 2011 AT 1:06 AM

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