Question about 2006 Nissan Sentra
The check engine sign is on and my engine experiences an erratic idle most of the time but sometimes it has a normal idle. whenever i ryn with an rpm above 1,500 the engine is performing well. the engine usually turns off after a sudden stop and you can feel like it runs out of air or electricity but you can start the engine easily in one click. if the engine is cold the check engine is off but turns on after 30 seconds of engine running then the problem occurs. it's really hard to handle the car especially during traffic and when the a/c is on because it easily turns off the engine. from neutral to drive in a traffic you can usually experience an engine failure and you have to start again. we already replaced the crank and cam sensors, replaced the 4 coils but same problem exist. we used a computer twice to scan te problem and the finding is "ignition switch - primary". please help me how to deal with the problem
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Posted on Jan 02, 2017
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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. 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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