The crankshaft position sensor can fail after many years of service. The sensor is on the engine and experiences temperature variations which can eventually cause the wire coil to open. This can happen suddenly or when the parts gets hot. In some cases it may work again after cooling.. To test this failure you need to check the problem code in the computer with a reader. It may show no failure, but if driven when it fails, the code should appear on the reader. It may require running the engine until the engine dies, because if it cools and works again, the code may be cleared.
how to test crank sensor
A computer diagnostic test will generally tell you if you have a faulty crankshaft position sensor.
You will have to test the resistance on it to make sure it is within specs.
scanning for codes will indicate if the CPS is at fault.
To test a 1995 Cavalier crank sensor you would need to get a mechanic's computer. They can put a sensor/fuse tester on it and see if it is working properly.
1991 to 1993 3000gt do not have a crank sensor. Only a cam sensor. And when does go out the car will not start or have a very irregular idle.
To test a crankshaft position sensor on a 1996 Jimmy Blazer, use a CKP sensor to test for voltage output. Compare the results to manufacturer specifications.
CPS Crank Position Sensor on bell housing right next to tach / ecu sensor. sensors r interchangeable. swap to test theory :-) Paul - Audi enthusiast
To change the crankshaft position sensor of the 1999 Tahoe, you must first disconnect the negative battery ground cable to avoid accidents. Then, remove the wire harness from the sensor, disconnect the wires, and pry out the bolt. Place the new sensor in the same area, replace the bolts, and reconnect the wires. Test the sensor to see if it is working.
Using a scanner with a scope, you can view the output wave of the sensor as you crank the engine.
The throttle position sensor can be tested by moving the throttle as observing the engine's response. If it is smooth and consistent, the sensor is functioning properly.
Once you've checked the spark plugs, coil pack, distributor, fuel pump and all fuses and they check out to be good, and you have checked to make sure the timing belt has not jumped, then you have a crankshaft censor malfunction. The automobile will turn over but just won't crank. That means you would need to replace the crankshaft censor.