How to Fix a P0300 Code?

Answer

A P0300 code is more of a general code. If the number ends with a 2, it would tell you which cylinder is misfiring. With a 300 code, you're going to have to check a lot of things to find out what to fix. It could be the spark plugs, exhaust valve, a bad oxygen sensor, or even a bad computer.
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Q&A Related to "How to Fix a P0300 Code?"
Try replacing the wires and plugs and even coil.
http://wiki.answers.com/Q/How_to_fix_code_p0300_on...
Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly. A P0300 diagnostic code indicates a random or multiple misfire
http://www.fixya.com/cars/t2449311-fix_code_p0300_...
If it's a random misfire, it's not a single cylinder all the time. It's probably a lean condition. Tune it with HP Tuners software so that it's running right.or turn off the misfire
http://answers.yahoo.com/question/index?qid=200908...
You would need to bring the car into a Saturn dealership garage to have it
http://www.chacha.com/question/how-can-you-fix-a-o...
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