Question about 1989 Chevrolet Cavalier
Car stalls after being driven for a few minutes (about 2 miles). Car only stalls when idling in gear, not when it is in park or neutral. Rough idle in neutral or park, but no stalling. May have sparkplug misfire.
Replaced fuel filter, fuel injectors, computer, EGR valve mount gasket, throttle body mount gasket, upper intake manifold gaskets (between plenum and manifold), spark plugs, spark plug wires, cold air intake hose (underside was shredded by the throttle body port).
Old injectors had crud all over the nozzles and one of them had a large brown spot on the side of the injector body. Throttle body gasket came off in two pieces. Fuel rail looked clean and had good fuel flow. Spark plugs didn't have any residue on them when I pulled the old ones. Computer isn't showing any error codes and no check engine light.
Any assistance would be greatly appreciated as I'm pulling my hair out over this one.
Have you heard of Noid lights? You unplug the fuel injector and plug these in and they will light up if the injector is getting power. This might give you a better hint. There are also lights that go inbetween the spark plug and wire. Between these two items you may be able to narrow down the problem to a specific system. I believe that your car has a coil pack. Some of these engines have problems with the crank trigger. I believe it is located on the back side of the motor. If you decide to change it, be careful. I have heard of them breaking into two pieces and becoming a big problem.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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Dec 28, 2015 | Dodge Cars & Trucks
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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