Question about 1991 Geo Tracker

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91 tracker the revs high as soon as its started?

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Old post.
BY DESIGN. 91 is 8v TBI and does it more,(laws here force that with wet inducted fuel TBI (read nasty smog engine,cold)

turn key in say alaska (yah cold. start say 2000 rpm and in 3 to 30 seconds, drops to say 1500, (dash pot did that by ECU commands)
then the IAC rules the roost a thermal device that opens even more at -10c , and races, until it hits 158F and closes
then ecu wakes and controls idle speed by software and regulates at 800rpm
all do that. Brand new. or in perfect running order,

if the 91 ever gets vacuum leaks
it will race fast hot and cold
with full power and no misfiring.
with leaks like that the ISC VALVE GOES OUT OF CONTROL.

Posted on Jan 17, 2016


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SOURCE: My 1992 automatic tracker revs really high while its in drive

hey i know what the real answer is and i am a girl. girl with a recent purchace of a 92 tracker and same situation. I found it to be a cable located next to your throttle cable , the unofficial name for it is a kickdown cable. I am in search of one to purchase my self. That is the reason that you are having the high revving its having trouble going into 2nd or 3rd gear due to the cable being broken or missing.

Posted on Aug 01, 2010

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