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Car runs rough and exaust man gets red - 2003 Saturn VUE

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There is a restriction in your exhaust system somewhere! probably a plugged up catalytic converter or muffler. if car was in storage a long time ive seen mice and squirrels build nests in the muffler , but usually they get cooked out the first time the car fires up. this sounds further upstream than the muffler. you can verigy this lack of exhaust flow by standing behind the car and feeling how much exhaust is actually exiting the tail pipe. there should be a decent flow even at idle and gradually increase as rpm's climb. if youre not feeling this there is a blockage somewhere. you can start by disconnecting the muffler and running the same test, if results are the same, move further up the pipe to the next possible cause. keep going until you have found your "plug". repair or replace the defective part and re assemble the exhaust system. in the worst possible scenario your valve timing could be off, but unless you have had a timing belt or similar work done recently, i would say thats almost 90% not the problem.

Posted on Mar 23, 2011

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You need to have your Catalytic converter checked. This sound like it is stopped up.

Posted on Mar 23, 2011


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