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Dan, Technician
Category: GM
Satisfied Customers: 23938
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Crankshaft position sensor is bad if my check engine light is not on?

Resolved Question:

How do I know if my crankshaft position sensor is bad if my check engine light is not on?
Submitted: 5 years ago.
Category: GM
Expert:  Dan replied 5 years ago.
Welcome to JustAnswer, my name is XXXXX XXXXX I'm here to help get your problem resolved. Ask follow up questions, thanks. Crank sensor will usaully cause a no start, not make it run rough...I would remove each spark plug to see if all wires have good spark..If not replace coil that spark plug wire with no/weak spark leads to. Let me know if you have questions, thanks.
Customer: replied 5 years ago.
If the coils are functioning what would you look at next?
Expert:  Dan replied 5 years ago.
I would check injector resistance next to see if one is out of spec but coils are most common problem. Let me know if you run into questions, you can reply at any time even after you click accept without additional fee's. Thanks.
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