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Old 01-03-2007, 10:53 PM
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Default Re: Check engine light

Could be a cat, or:
Bad injector (run a can of Techron through the fuel system. might help, it does a great job of cleaning injectors)
Bad vacuum hose (you can try the old propane trick to see if idle increases when the propane comes near a cracked vacuum line)
Opening past the MAF sensor in the tube to the throttle body
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