Hi I’m helping a friend with his 2006 Chevy cobalt 2.0 su...

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Hi I’m helping a friend with his 2006 Chevy cobalt 2.0 su...

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Hi I’m helping a friend with his 2006 Chevy cobalt 2.0 supercharge her are getting a P0335 code for the crank shaft position sensor we replaced and are still getting it wh have checked the timing and made sure it didn’t jump the c...

Hi I’m helping a friend with his 2006 Chevy cobalt 2.0 supercharge her are getting a P0335 code for the crank shaft position sensor we replaced and are still getting it wh have checked the timing and made sure it didn’t jump the chain iit will start and run about 5 or 10 mins then just shut off after that it won’t restart Mechanic's Assistant: Does the vehicle stall at low speeds? Does it sputter? Have not been able to drive it but when it starts it idles perfect no missing then just shuts off like you turn the key off Mechanic's Assistant: Are you fixing your Cobalt yourself? What have you tried so far? We are I explained what we have done in first response

Answer 1

attached is the code diagnostic sheet and the sensor replacement instructions just to be sure you replaced the right sensor. I hope this helps Mark. Be safe, Lou

Answer 2

The P0335 in fact indicates an issue with the crankshaft sensor, which obviously you know. I think there may be an intermittent connectivity issue to the crankshaft sensor or a faulty part. 1-Was the crankshaft sensor installed an OEM part or aftermarket? 2-Have you scoped the crankshaft signal when the vehicle will crank but, not start? If your scan tool reads live data, when the vehicle will not start, monitor engine RPM and see if you're getting a reading of 150RPM or more. If no RPM reading, that's good indicator that we still have a crankshaft sensor issue.

Answer 3

Understood. How about a scan tool that reads live data? Do you have one of those?

Answer 4

Okay understood. To confirm the issue here, we need to see live RPM data when the issue occurs. You may be able to see the tachometer move (if equipped) when the vehicle will crank but, not start. If it raises above zero when cranking, but not starting, our issue is not the crank sensor but, something else.

Answer 5

Okay sounds good.

Answer 6

Got it. I would say we still have a crank sensor issue then. Try wiggling the connector and wiring to the sensor and while an assistant attempts to start the vehicle.

Answer 7

Okay thanks. Let me look that up. That code indicates a fault with the throttle body actuator. Leaving the key on, remove the intake boot to the throttle body. Have an assistant press the gas pedal to the floor. Can you see the throttle plate move inside the throttle body?

Answer 8

Okay understood. I will be away from my desk until Monday after noon today mountain time zone.

Answer 9

Okay great. Yes I'm here. Will the vehicle idle now?

Answer 10

To move forward, we're going to need a scan tool that can read live data.

Answer 11

We'll be able see what data line skewed preventing the vehicle from starting. Live data can still be viewed even with the vehicle not running.

Hi I’m helping a friend with his 2006 Chevy cobalt 2.0 su...

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