Question about 1999 Subaru Legacy

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1999 legacy outback no power going up hill,new knock sensor

Check engine light on and still no power going up hill

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  • nancy kern Mar 12, 2009

    thank you for the help.

  • nancy kern Mar 12, 2009

    thank you you are wonderful to help like this.

  • DanyielAI May 11, 2010

    You probably need a full tune up. And you need to do a systems diagnostic to see what trouble codes the commputer is reading. I wouldn't drive it too much till you do this.You may be doing a significant amount of harm to your vehicle.

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Check your tail pipe for color. If insides are black you are running rich and it all may boil down to an oxygen sensor or an EGR valve. EGR valves are the most common causes for the 'check engine' light to come on. Your trouble codes will tell you what it is. Some auto stores will check it for free or you can buy an inexpensive checker.

Posted on Mar 12, 2009

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