Question about 1995 Chevrolet G20
STALLS SOMETIMES WHEN PUT INTO GEAR,WILL IDLE FOR ABOUT 30 SECONDS,CANT GET OVER 30 MILES AN HOUR,AND STALLS,SOMETIMES IT RUNS PERFECT THEN STARTS ALL OVER. I HAVE REPLACED THE FUEL FILTER,THROTTLE POSITION SENSOR,GASKETS & CLEANED THROTTLE BODY,& TUNE UP HAS 82000 MILES CHECK ENGINE LITE GOES ON AND OFF MOSTLY OFF WHEN THE PROBLEM STARTS ITS CRAZY
Check your fuel pump presure. Pump is in the tank. Also try and loosen the fuel cap, the tank vent may be stopped up.
Posted on Sep 15, 2009
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Posted on Jan 02, 2017
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Here are the common cause of surges, stalls at stops, slow idle speed, erratic idle, it is in most cases the idle speed control air-bypass valve and/or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving
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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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