Question about 1996 Chevrolet K1500
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Posted on Jan 02, 2017
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
raeally sound s as if you fuel pump pickup is clogged. this is exactly what was wrong with a 1997 tahoe. no engine codes. slow acceleratoion fine all the way to freeway speeds 70mph. but if you go full throttle truck would buck and backfire through throttle body. it is a lot of work but you must drop the tank, inspect your lines into the tank, pull the pump replace the filer and if if filter is torn make sure pump is not also clogged. good luck
Posted on Dec 31, 2009
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