Question about 1993 Nissan Pathfinder
Rpm fluctuates at times when warming vehicle. when driving vehicle stalls when shifting into gear. tested air flow meter but still okay. was told possible transmission replacement but what role does the transmission play when the vehicle is warming up?
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Posted on Jan 02, 2017
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Engine stalls or RPM
fluctuates at idle up and down or dies near idle.
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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