Thread: crankshaft position sensor help

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  1. #1 crankshaft position sensor help 
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    So i have a 99 grand prix 3.8l non super v6. Me and a buddy replaced the cps and now the car wont start at all now just looking for some insight. P.s. sorry for poor grammer this was done from phone.
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  2. #2 Re: crankshaft position sensor help 
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    We need more information. Why did you do the CKPS?
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  3. #3 Re: crankshaft position sensor help 
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    We changed it cause the code popped up for it. The car started misfiring after driving it for awhile. So we replaced it and now it wont start at all. It used to start up fine before we changed it.
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  4. #4 Re: crankshaft position sensor help 
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    Anychance its a bad cps
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  5. #5 Re: crankshaft position sensor help 
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    Yup or plug cam sensor shares the 12 volt power feed with the crank sensor so use a scan tool to see if you have a cam pulse, then check the 3x and 18x crank sensor pulses and see if both are there or not.. and buy oem acdelco parts, after market parts on these 3800's don't work well if at all
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