Question about Buick Regal
P0300 is a random misfire code not a Crank Sensor Code. Alot of cars don't rely on the crank sensor for fuel and ignition timing but simply to check misfires. However, some cars do need the crank signal to stay running. It's possible that the sensor has an intermittent short or open in it and the car is dying when the signal is lost. If i remember correctly the crank sensor on a 3.8 is behind the harmonic balancer. So that would require removing the drive belt and balancer to get to it. Not a real challenging procedure but it will likely require the use of a harmonic balancer puller.
Posted on Oct 04, 2009
My car did the exact same thing. It would die while driving. And then sometimes once I turned the car off, it wouldn't start back up for a while. The check engine light would occasionally come on and off. So when it did come on, and the car was running, I took it to get the trouble codes. It said that it was the crank sensor. It's a very common problem for GM cars. Once you replace that, you should have solved your problem. It did mine.
Posted on Oct 11, 2009
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Posted on Jan 02, 2017
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