Question about 2002 Oldsmobile Silhouette

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Throttle body removed and replaced

I changed the thermostat. To do that, I had to remove and replace the throttle body. Now the van won't idle at all. The only way it will stay running is if I keep a foot on the gas pedal, which has resulted in a racing motor[4500rpm] when not in gear

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  • Oldsmobile Master
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I'm not a chevy guy, but I think you need to reset the throttle position sensor (TPS) once it's disconnected.

For idle, the throttle plate is almost closed with just a little air getting through. For more air, an IAC idle air control valve lets more air in to maintain an ilde speed. The TPS tells the engine computer when the throttle plate is closed and then the computer tells the IAC to let more or less air in to maintain idle.

So, as long as you reconnected all the connectors you took off, I'm guessing you just need to make some readjustments. Calling your Chevy dealer service department, they can tell you if that's true.

Posted on Mar 03, 2009

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if you are satisfied with my solution then rate for me......
thank you...

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