Question about 2002 Saturn VUE
Testing Crankshaft sensor:
Pull up the RPM reading and crank the engine over. Hold accelerator to floor to shut off fuel to the engine. No reading find the crank sensor, inspect for damage, unplug electrical connector and clean it with electrcial contact cleaner spray and then plug the connector back into the sensor. Crank the engine while watching for RPM reading, again hold down the accelerator to prevent fuel flow to the engine. If you have RPM reading now sensor is ok, engine should run.
Do a continuity test on the crank sensor, if it reads zero, it is bad.
Unplug sensor connector,using a digital volt ohm meter set on ac volts position.Connect the leads to the two pins in the connector of the crank sensor.Then have a helper crank engine over.You should see ac voltage,if not,then your crank sensor is bad.
Posted on May 09, 2010
you need a DVOM
measure a/c voltage at the sensor
any voltage reading is good but to get more detailed you will need an oscilloscope
does the vehicle crank and/or run at idle?
Posted on May 08, 2010
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Posted on Jan 02, 2017
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