Calgary Jeep Association

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Author Topic: Revving high after start up  (Read 729 times)

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94Jeep

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Revving high after start up
« on: November 24, 2006, 10:23:18 PM »
After starting my '94 the revs go up and down several times at which time the "check engine" light usually comes on. Ideas on what causes this and how to fix??
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Offline apex

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Revving high after start up
« Reply #1 on: November 25, 2006, 02:57:37 AM »
throttle position sensor is my guess. Screwy idle is usually a TPS.
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Offline Mudhawg

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Revving high after start up
« Reply #2 on: November 25, 2006, 10:39:50 AM »
i dont get a check engine light but my tracker also has an idle that goes from like 1000 RPM down to 300 and back... (everytime your stopped at a light) it gets annoying after a while
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1984 Chevy 6" Lift 40" Boggers
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