Won't pass emissions

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Code P0301 cylinder 1 misfire and code P0507 Idle is high. Put in new plugs, wires, pvc valve and a idler control valve. It still won't pass!

tyssaturn in Cudahy WI

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Aug 2, 2009

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3 Replies

Popular Answer
backyard techon Aug 2, 2009

You need to check as many as you see or feel rubber vac hoses. You have a pretty good vac leak.

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Bret Bodason Aug 3, 2009

Vacuum leaks are definitely a good place to check like Autoknowhow said. You can also read our article on the P0301 code here: http://repairpal.com/OBD-Code-P0301for more information.

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Ettingeron Jun 2, 2010

I had the idle high problem with cylinder 1 misfire. I think it was the manifold intake. I just threw away my repair receipt 2 days ago. Also may want to replace coil packs. I know bill was like 300

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