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Old Oct 12, 2022 | 06:40 AM
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Getting a po335 I looked it up said it’s cps question is can that sensor make your car run and die sometimes start sometime crank then stop or could it be the pcm itself car is a 98 6 speed thanks in advance
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Old Oct 12, 2022 | 08:27 AM
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A P0335 is a CKP issue…CPS is cam sensor…yes, a faulty one will cause the car to die or cause a crank no start condition…best to replace with an OEM sensor and you can hope that fixes it but always a good idea to check the wiring first…it is a 3 wire Hall Effect Sensor…a 12 volt reference, a signal to the PCM, and a sensor ground…if the Tach does not move during cranking that points towards the crank sensor. If you have a scan tool you can watch the RPM data PID during cranking…you’ll see about 150 RPM or so.

Last edited by C5 Diag; Oct 12, 2022 at 08:32 AM.
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Old Oct 12, 2022 | 08:40 AM
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I'd like to add that if you replace or disturb the CKP sensor a crankshaft position sensor relearn procedure will need to be performed with a Tech2 or aftermarket scan tool with that capability. The engine will still start and run.
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Old Oct 12, 2022 | 09:09 AM
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Originally Posted by ThomasR
I'd like to add that if you replace or disturb the CKP sensor a crankshaft position sensor relearn procedure will need to be performed with a Tech2 or aftermarket scan tool with that capability. The engine will still start and run.
I did see that yesterday some say yes and some say no but if I get it running I’ll take it to the dealership for the relearn
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Old Oct 12, 2022 | 09:11 AM
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Originally Posted by C5 Diag
A P0335 is a CKP issue…CPS is cam sensor…yes, a faulty one will cause the car to die or cause a crank no start condition…best to replace with an OEM sensor and you can hope that fixes it but always a good idea to check the wiring first…it is a 3 wire Hall Effect Sensor…a 12 volt reference, a signal to the PCM, and a sensor ground…if the Tach does not move during cranking that points towards the crank sensor. If you have a scan tool you can watch the RPM data PID during cranking…you’ll see about 150 RPM or so.
yes I meant crankshaft I did order a ac delco if you guys thought it was it ,now the fun taking the header and starter off ,thank you
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Old Oct 12, 2022 | 09:17 AM
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Originally Posted by Che vette
I did see that yesterday some say yes and some say no but if I get it running I’ll take it to the dealership for the relearn
You DON’T have to bring it to a Dealership for a relearn…99.9% of shops use bidirectional scan tools…they can do it.
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Old Oct 12, 2022 | 09:19 AM
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Originally Posted by Che vette
yes I meant crankshaft I did order a ac delco if you guys thought it was it ,now the fun taking the header and starter off ,thank you
Without checking the integrity of the electrical circuit you have a 50-50 shot of fixing the car…but that’s up to you !!
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Old Oct 12, 2022 | 09:23 AM
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Originally Posted by C5 Diag
You DON’T have to bring it to a Dealership for a relearn…99.9% of shops use bidirectional scan tools…they can do it.
they’re aren’t any shops near me I’d trust
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Old Oct 12, 2022 | 09:26 AM
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Originally Posted by Che vette
they’re aren’t any shops near me I’d trust
It is a simple procedure and takes 2 minutes to accomplish…I wouldn’t worry to much about if a shop can do it or not…this test is performed on MANY different cars…just call the shop and ask if they can perform a crankshaft variation relearn.

Last edited by C5 Diag; Oct 12, 2022 at 10:58 AM.
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Old Oct 12, 2022 | 10:16 AM
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Originally Posted by C5 Diag
It is a simple test and takes 2 minutes to accomplish…I wouldn’t worry to much about if a shop can do it or not…this test is performed on MANY different cars…just call the shop and ask if they can perform a crankshaft variation relearn.
ok appreciate it
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