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Check Engine Light-Coolant Temp Sensor-AGAIN!!!!!!!!!! 200 1993

posted by  Jessie on  Wed Sep 29 07:26 CST 2010
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last visit: Tue Jan 18 17:45 CST 2011
[RELATED]

Check under engine sensors in the 700/900 faq for instructions on how to test the sensor.

If you have already changed the temp sensor you may have a ground problem. Check the resistance between the engine and pin 5 of the LH ecu plug (ecu unplugged). If you have resistance, you have a ground problem.

Try cleaning the ground wires on the fuel rail. There is also apparently a crimp in the wiring harness for all the ground wires under the intake manifold that can go bad. I am still having ground issues with my 93 so I am planning to investigate that.






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