Video tutorial on how to test the crankshaft sensor of a Volvo 850 equipped with a 5 cylinder. This tutorial was done on a 1996 model. If your vehicle has no spark, hard starts, or is running rough, this could possible be the culprit of the problem.

Testing:
-unplug the harness going to the crankshaft located under the distributor cap (2 prong plug)
-a multimeter is required for this test
-set the ohm meter to the thousand increment setting
-put the test probes on the terminals inside the plug on the crankshaft sensor side
-the reading should be between 200-500ohms
-if the reading is not within the specified range, the sensor needs to be replaced

Replacement:
-unplug the harness going to the crankshaft located under the distributor cap
-remove the 1 10mm bolt on the top of the sensor
-pull sensor straight out