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93 tracker reving high

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Offline westvilleguy

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93 tracker reving high
« on: December 24, 2007, 06:30:00 AM »
my fathers tracker has been reving really high latley, and he can drive it down street and back and it still revs really high. it never did that when i owned it i noticed other trackers i had reveed up when u started them but thats it. anyone know what this could be? its a 93 8 valve standard.
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Offline muskegtracker

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Re: 93 tracker reving high
« Reply #1 on: December 24, 2007, 06:49:48 AM »
Very possibly a vacuum leak.  I had a similar issue.  I could never figure out where the problem was.  I checked all vacuum lines, and no leaks.  It turned out to be the throttle body.  I stripped it apart, cleaned it up.  I was too cheap to by a gasket set for it so I silconed the whole thing, and that fixed the problem.  I figure the vacuum leak was caused by one of the old (91 tracker 385,000 kms) gaskets in the TB.
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91 Chevy Tracker
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95 Tracker

Re: 93 tracker reving high
« Reply #2 on: January 13, 2008, 04:46:05 PM »
i have the same problem in my 95 but it idels at different rpm everytime i stop. ill stop at a traffic light it will run like shit and want to stall, it has once. stop at the next traffic light it will purr like a kitten. ill stop at the traffic light after that and it will rin 1200 rpm. it has its own personality.
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Offline Rhinoman

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Re: 93 tracker reving high
« Reply #3 on: January 14, 2008, 04:59:24 AM »
As well as checking for vacuum leaks.
At the back of the throttle body is a fast idle mechanism. Its vacuum operated and is normally in fast idle but its pulled out by the ECU. Check that that isn't seized or sticky and that all the pipes are good and that the solenoid valve operates.
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