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idles too fast ?

Old Dec 10, 2016 | 09:10 AM
  #1  
srb53150's Avatar
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From: md
Year: 98
Model: Cherokee
Engine: 6 cyl.
Default idles too fast ?

just started today, start it idle jumps to 1800 rpm , within 15 seconds drops to 1500 & stays there ? whats up , any ideas. 98, 4.0 w/ auto trans, engine is stock w/ 140 k miles. thx
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Old Dec 10, 2016 | 09:46 AM
  #2  
extrashaky's Avatar
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From: Florida
Year: 2000
Model: Cherokee(XJ)
Engine: Golen 4.6L
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Check for vacuum leaks.
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Old Dec 10, 2016 | 12:35 PM
  #3  
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From: Knoxville Tn
Year: 1999
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Engine: 4.0
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Check TPS.
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Old Dec 10, 2016 | 12:37 PM
  #4  
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Year: 1999
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Engine: 4.0
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Check the TPS.
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Old Dec 10, 2016 | 12:38 PM
  #5  
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Year: 1999
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Check your TPS. That's what mind did & TPS was the fix.
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Old Dec 10, 2016 | 01:20 PM
  #6  
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From: York PA
Year: 2001
Model: Cherokee
Engine: 4.0 Litre I6
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Originally Posted by z28
Check TPS.
Originally Posted by z28
Check the TPS.
Originally Posted by z28
Check your TPS. That's what mind did & TPS was the fix.
You may want to check your TPS.
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Old Dec 11, 2016 | 09:47 AM
  #7  
cruiser54's Avatar
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Originally Posted by CurrySoSpicy
You may want to check your TPS.
LOL.

I wonder if the OP ever cleaned his throttle body and IAC:
http://cruiser54.com/?p=60
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