Question about 1993 Nissan Altima
I have a 1990 Nissan Bluebird SSS U12 and SR18 Motor automatic with 1800 CCS
Recently it would just cut off the engine while driving and will not start for about 15 to 30 minutes and then would come right, Does not do it all the time but is becoming regular now like once evry 3 days (used to be weeks)
When the engine cuts out, there is no spark from the ignition coil ( I tested it) and after 15 to 20 minutes it starts to spark and then the car will start.
I have read that faulty crank sensor or crank position sensor usually causes the engine to cut off when it gets warm and comes right after a while when it cools down.
My question is that does my car have a crank sensor or similar (model given above) or whether I go ahead and replace the ignition coil.
It looks like a carburettor engine although a Nissan mechanic said to me that All Nissan U12 engines came with some sort of EFI
This def sounds like a fule pump issue ...it should be located in the gas tank its self although i would check the fuses first before getting into the tank.
If this is in a 240sx the way into the tank is through the trunk.Lift the carpet and you will see on the mid right side a small 6-8" lid with some wires going into it. Unscrew that and your on your way in.
If you do pull out the pump just be careful handling it as to not break the sensor unit attached to the pump.
Posted on Aug 19, 2009
It could be one of the following, clogged fuel injector,
Defective Mass airflow sensor.. .this would be the first thing i would check..
Is your check engine light on, this would help me better to diagnose your problem.
Posted on Dec 22, 2010
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Engine stall or RPM fluctuates
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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