Question about 2004 Chevrolet Cavalier
Code po300 on computer. Changed plugs and boots. Check coil pack. The car runs down the road fine as long as you give it gas. Let off the gas and it idles rough, nearly stalls. Heard it could be O2 sensor and throttle position sensor. How do i determine which one. Or if its that at all. Need help. Dont want to go buyin parts not knowin if its goin to fix it.
I have a 2004 cavalier and had a po300 code bought all kinds of sensors and replace spark plugs and the whole coil assyembly the problem was the timing chain tensioner lost tension because of lack of oil changes the engine got all caked up with layers of muddy oil and pluged up the oil galleries and of course the timing tensioner causing the chain to jump a tooth after replacing chain and tensioner and cleaning the whole engine even the oil pump pickup screen the engne came to life again with no codes and runs like new my engine is a 2.2 ecotech
Posted on Aug 24, 2011
CLEAN EGR VALVE.
Posted on Dec 30, 2008
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Posted on Jan 02, 2017
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