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Ron Z.
Ron Z., - Chevy Tech -
Category: Chevy
Satisfied Customers: 17788
Experience:  18+yrs experience. State Inspector and Chevy Diagnostics
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Where is the crankshaft sensor in a 1999 chevy lumina

Resolved Question:

Where is the crankshaft sensor in a 1999 chevy lumina
Submitted: 6 years ago.
Category: Chevy
Expert:  Ron Z. replied 6 years ago.


Do you have the 3.1L or the 3.8L engine?



Customer: replied 6 years ago.
Expert:  Ron Z. replied 6 years ago.


There are 2 crankshaft sensors on this engine.



The 24X crankshaft position sensor, secured in a mounting bracket and bolted to the front side of the engine timing chain cover, is partially behind the crankshaft balancer. The 24X Crankshaft Position (CKP) Sensor is used to improve idle spark control at engine speeds up to approximately 1600 RPM .



The 7X crankshaft position sensor provides a signal used by the ignition control module.
The ignition control module also uses the 7X crankshaft position sensor to generate 3X reference pulses which the PCM uses to calculate RPM and crankshaft position.

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