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87 Cherokee 4L idles very fast sometimes
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CarGuru > Jeep Willys > 87 Cherokee 4L idles very fast sometimes 31 January 2005 04:55:16
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87 Cherokee 4L idles very fast sometimes

DDKreiter 31 January 2005 04:49:10
 Sometimes, cold or warm, my 87 4.0L Cherokee idles as fast as
3,500 RPM. Pulling up on accelerator does not help. O-rings have been
replaced. I was thinking of cleaning contacts on computer and cleaning the
throttle body next. Any other suggestions? Anything else to clean while I have
the TB off? My 87 Clymer shop manual doesn't really have any info on cleaning
the TB
Thanks
Dean
Add comment
Mike Romain 31 January 2005 04:55:16 [ permanent link ]
 Ours does that every couple years and I clean the contacts on all the
switches on the throttle body, particularly the TPS connection with a
spray contact cleaner. WD40 will work in a pinch, but an electronic
cleaner is better.

I then use some spark plug boot protector type dielectric grease on the
plug seal.

Lasts a couple years normally.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

DDKreiter wrote:>
Sometimes, cold or warm, my 87 4.0L Cherokee idles as fast as> 3,500 RPM. Pulling up on accelerator does not help. O-rings have been> replaced. I was thinking of cleaning contacts on computer and cleaning the> throttle body next. Any other suggestions? Anything else to clean while I have> the TB off? My 87 Clymer shop manual doesn't really have any info on cleaning> the TB> Thanks> Dean
Add comment
L . W . Hughes III 31 January 2005 05:06:17 [ permanent link ]
 Hi Dean,
That's what to do next, as the Throttle Position Sensor and fast
idle Step Motor are located on it:
http://members.cox.­net/wilsond/tb/tb.ht­ml
God Bless America, ßill O|||||||O
mailto:LWHughes3rd@­aol.com http://www.billhugh­es.com/

DDKreiter wrote:>
Sometimes, cold or warm, my 87 4.0L Cherokee idles as fast as> 3,500 RPM. Pulling up on accelerator does not help. O-rings have been> replaced. I was thinking of cleaning contacts on computer and cleaning the> throttle body next. Any other suggestions? Anything else to clean while I have> the TB off? My 87 Clymer shop manual doesn't really have any info on cleaning> the TB> Thanks> Dean
Add comment
 

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CarGuru > Jeep Willys > 87 Cherokee 4L idles very fast sometimes 31 January 2005 04:55:16
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