Question about 1999 Isuzu Rodeo

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My 1999 rodeo has a throttle position sensor issue .the truck is staying at a high idle i brought and instaled a new sensor it didnt fix the problem how do i resolve? I had a print out done it said open or short circuit or poor eletric connection or throttle boby damage or faulty tp sensor.

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  • 97 Answers

There is a mechanism called the Idle Air Control Valve that is bolted to the throttle body with two bolts. It has an electrical connector plugged into the front of it. When that unit started going defective on my 97 Rodeo, sometimes the car would idle at 2500 RPM when the clutch was pushed in. Other times it stall when the clutch was pushed in. At the time (5 years ago) it cost $41 from Autozone to replace.

Posted on Mar 22, 2011

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Posted on Jan 02, 2017

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1 Answer

Throttle positing senser on a 99ranger I changed it now the idle is way to high


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I just got one today with the same problem; both lights and code p1290 hard to start and once started stayed at idle with no accelleration . If you have already fixed it would be nice to share the info. If not already done ill tell you when i fix this one.

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