2002 Jeep Cherokee Surges in RPM

2002 JEEP CHEROKEE
200,000 MILES • 6 CYL • 4WD • AUTOMATIC
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PDSCHOLTEN
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RPM surges 200 - 400 RPM when traveling 50 plus MPH with no discernable change in MPH. The surges last for 10 to 20 seconds before returning to base level. Occurance is radom. What could cause this?
Dec 16, 2009 at 10:06 PM
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HUSQVARNAUSA
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is it just wen it is cold, like you have just started driving
Feb 10, 2010 at 8:43 AM
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PDSCHOLTEN
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[quote:7db39a3af1="husqvarnausa"]is it just wen it is cold, like you have just started driving[/quote:7db39a3af1]

No - it is seems even more likely to happen after driving for a while.
Feb 10, 2010 at 10:57 AM
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HUSQVARNAUSA
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is the motor serging of just allmost completly cutting out
Feb 10, 2010 at 4:45 PM