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Crankshaft position sensor

Tiny
MOHAMED FATHY
  • MEMBER
  • 2004 GMC ENVOY
  • 4.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
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.
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Sunday, October 8th, 2017 AT 6:02 PM

7 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,463 POSTS
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.
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Monday, October 9th, 2017 AT 6:52 PM
Tiny
MOHAMED FATHY
  • MEMBER
  • 7 POSTS
Can you please you send me chart or diagram for the wire if you please?

Thanks for your patience.
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Tuesday, October 10th, 2017 AT 3:46 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,604 POSTS
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
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Wednesday, October 11th, 2017 AT 10:54 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,463 POSTS
This is the full engine harness it shows all of the engine related wiring and the colors to look for.
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Wednesday, October 11th, 2017 AT 11:36 AM
Tiny
MOHAMED FATHY
  • MEMBER
  • 7 POSTS
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
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Sunday, October 15th, 2017 AT 8:32 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,604 POSTS
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

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Monday, October 16th, 2017 AT 11:11 AM
Tiny
MOHAMED FATHY
  • MEMBER
  • 7 POSTS
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
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Saturday, November 4th, 2017 AT 12:33 PM

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