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Tom

Tom 10/17/2010

1990 Chevrolet Camaro Iroc-Z 8 Cyl 5.70L

Engine

engine shuts down while driving, we just changed out fuel pump, and filter, changed out spark plug and wires,

3 Answers


HouseCallAuto

HouseCallAuto 10/17/2010

Tell me more. Does the engine eventually start up after it has cooled down? Does it restart right away? Cmon with details if you want an accurate answer.

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Tom

Tom 10/17/2010

Yes it starts after it cools down, no it does not start up right away. We do did fine a loose wire coming off the exhaust, which we do not know where it goes, we trace a sensor what has only one wire

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HouseCallAuto

HouseCallAuto 10/17/2010

The cause is very likely to be a shorted fuel injector (high resistance) which causes the injector drivers to shut down in the ECM. if I am right, what you will have after it stalls out and will not restart is you will still have good spark. Then, if you check you will have little or no fuel injector pulse. Test injectors resistance during the problem. Cold engine approximately 15-16 ohms, hot engine approximately 17 ohms. All injectors should be within 0.2 ohms minimum to maximum.

Potential Causes:
Failed Fuel Injector

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