Crankshaft position sensor

2004 GMC ENVOY
160,000 MILES • 4.2L • 6 CYL • 2WD • AUTOMATIC
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MOHAMED FATHY
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Hi,

in my car I have delaying start and the scanner give code p0335.
so I replaced the crankshaft position sensor then erased the code,
but still have the same issue.

Update:

I replaced the cranckshaft position sensor. delaying start engine, the car has no power in running. the code of p0335 comes again.
Oct 8, 2017 at 6:02 PM
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STEVE W.
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That code means that the actual wiring to the crank sensor has a problem. It is either broken or the signal is shorted to ground. Check the connector and test for continuity from the sensors wiring to the PCM. Common areas are at the corners of the heads and intake manifold.
Oct 9, 2017 at 6:52 PM
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MOHAMED FATHY
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Can you please you send me chart or diagram for the wire if you please?

Thanks for your patience.
Oct 10, 2017 at 3:46 PM
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STRAILER
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Hello,

Here is a guide and the wiring diagrams for the engine you will need to get the problem fixed.

https://www.2carpros.com/articles/how-to-check-wiring

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
Oct 11, 2017 at 10:54 AM
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STEVE W.
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This is the full engine harness it shows all of the engine related wiring and the colors to look for.


Oct 11, 2017 at 11:36 AM
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MOHAMED FATHY
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hi there
i am so grateful to your response

by checking the cranckshaft position sensor connection and the sensor beside ive found the tow connectorrs wire are attached together
i separate them
covered them
detached the battery
then erase codes
still delaying start but car in moving goes mor powerful than before

can you please guide me what to do

thanks again for your help
Oct 15, 2017 at 8:32 AM
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STRAILER
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Lets clear the codes and then drive the car and then recheck the codes to see if anything comes up.

Here is a guide that can help

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

it sounds like it could be a vacuum leak or a MAF sensor that is dirty.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

https://www.2carpros.com/articles/mass-air-flow-service

Please let us know what you find. I'm interested to see what it is.

Cheers, Ken



Oct 16, 2017 at 11:11 AM
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MOHAMED FATHY
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i am so grateful the issue was tow wire of connector crankshaft position sensor attached together i confirm separate them then everything goes well

thank you for your help
Nov 4, 2017 at 12:33 PM