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the idle air control valve most the time
If the IAC was bad the car wouldn't run at idle or it would die when a load was put upon it.
there is a vacuum hose for the pcv system on the back of the intake that sometimes gets a hole in it. this may cause your no idle condition
i had a similar problem with my 92 ford escort Lx and it took me about 2 months to figure out that all i needed to do was 2 replace the pcv valve try 2 replace it it worked on mine. I hope this works
carb problems, adjust the idle screw and see if that helps
That happened to my 1996 F-150. Ended up being my oxygen sensor. It would crank, but not start.
It may be a bad Idle Air Control Valve .
Idle control motor defective.
There is a vacuum leak or the IAC (Idle Air Control) valve is bad.Or it could be your EGR valve, Mass airflow sensor or the O2 sensors. Most likely the IAC though. I am going through the same problem.
If its making a horrible grinding noise, it could be the bearing!
Check the TFI module. It is located on the distributor.
The most common cause for an engine to die out, while idling, is the idle speed is set to low. You can adjust the idle speed with the fuel injector vital screw.