Question about 1995 Chevrolet S-10 CA Edition

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1995 chevy 4.3 idling at 2300 rpms

4.3 vortec cpi motor idling at 2300 rpms and cannot get it to kick down,got 5 amps at air contol ,tps, and map senser.spray carb cleaner around intake no leaks and no vacume leaks.does anyone have any ideas?Thank you

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1995 S-10 Chevy Blazer just replaced fuel pump now it is idles at 1500 RPM's what should I do.

Posted on Nov 14, 2009

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Try cleaning the Idle control valve (IAC), If your lazy like i am use the whole throttle body cleaner and spray it as close as you can to the throttle blades. Follow the instructions on the back of the can, I end up using two cans, make sure it's Throttle Body Cleaner not carb cleaner.
The carb cleaner is to strong and may eat up the O rings in the throttle body and o rings to the other sensors like the IAC.
With the engine off, Disconnect the IAC wire harness and inspect for any corrosion and may want to spray a little WD40 and re connect if there are no problem with the connection.
Time to reset the IAC to the ECM. Turn on the Ignition for 20 seconds, on the run position with the engine not running. Turn the Ignition off for 10 Seconds, Then start the engine. Check for proper idle speed, if failed try again. If no change then the IAC needs to be replaced. If IAC is replaced, the new IAC needs to be reset to the ECM also.
Good luck and hope this helps, and go for a test drive after the cleaning or replacement.

Posted on May 29, 2009

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Aka:
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