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What else can i do for a p0300 code?
2001 Chevrolet Express 3500

What else can I do for a p0300 code?

(2001 Chevrolet Express 3500)
I have changed fuel filter, air filter, plugs, wires, distributor cap, rotor x 2, ignition coil, cam shaft position sensor, crankshaft position sensor, and radiator. I am not showing correct temperature on the gauge but that is the only other issue. I have also changed the radiator and oil cooler lines. Any ideas?
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2 answers & 3 comments
Popular Answer
on August 23, 2016
You may need to do a compression test both static and running, you may also want to do a leak down test of each cylinder. those motors are known for cam shaft issues which can give you the P0300.
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on August 23, 2016
So the fix would be a new cam shaft?
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on August 23, 2016
You may need to do a compression test both static and running, you may also want to do a leak down test of each cylinder. those motors are known for cam shaft issues which can give you the P0300.
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on August 23, 2016
So the fix would be a new cam shaft?
on August 23, 2016
After the work you have done .. *CRANKSHAFT POSITION RELEARN PROCEDURE* must be performed.. Professional grade scanner & 'operator' required! .. Otherwise PO300 shall remain!!
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on August 23, 2016
on August 23, 2016
This 'should' help you understand WHY crankshaft variation relearn is required:

http://www.cardone.com/techdocs/PT%2070-77-0003.pdf

Good luck with it!

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