If I have a faulty crank shaft sensor what symptoms would be going on with my 02 gmc Sonoma?

30

Asked by Jun 20, 2015 at 10:42 PM about the 2002 GMC Sonoma SL Ext Cab 2WD

Question type: Maintenance & Repair

Seems to fire fine, got good fuel pump pressure. Truck will not crank.

9 Answers

65,665

Your question is the sign of bad crank sensor,you have fire and fuel,but the crank sensor tell,s the ECM when to fire and has to be in time,if bad won,t know when to fire or give fuel correctly.

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94,985

No start, dies while driving, intermittent engine misfire. But yours will not crank over, so look for an open circuit in the main power supply and grounds to the starter, if that checks good then check for power to the key cranking power side of the starter solenoid, if you have all of this then the starter is most likely the problem, unless the engine is totally seized. Then you have problems.

1 of 1 people found this helpful.
65,665

One other thing to check all so,would be the timeing.

1 of 1 people found this helpful.
65,665

Hello Tennisshoes,answering at the same time,i took it as engine turning over,but you may be correct.

1 of 1 people found this helpful.
30

The engine does turn over but won't start.

65,665

Check the crank sensor.

2 of 2 people found this helpful.
30

How do I check the cank sensor? Could the rotary button be bad?

2 of 2 people found this helpful.
30

It gets fire from the coil to the distributer. It's not getting any fire from the distributer capvto the plugs. Does that make sense?

1 of 1 people found this helpful.
94,985

Yep the cap is either carbon tracked, or the rotor is burned through, I would replace then both if it has never been done.

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