Question about 2001 Chevrolet Cavalier

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Engine idols rough when idoling after it warms up.

I took the car to a serval shops and they put the car on a dianogstic and found nothing wrong. Plugs been changed new air filter new spark plug wires.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: sluggish engine

Could be your catalytic converter. Get an Oil Change and see if they will read your codes. If it indicates misfire or exhaust problem have the converter replaced. DO Not pay 600 dollars buy an after market converter and let them weld it in. Should cost 200 -300 bucks.

Posted on Sep 15, 2008

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SOURCE: p0300 code on a 1996 s-10.changed spark

they only cleaned the fuel injectors? did they take them out and inspect and TEST them?
on the other hand, it may just be a faulty reading. Take off the negative terminal on the battery and leave it for 10 mins to reset ECU. Then check if the problem comes back.

Posted on Mar 05, 2009

  • 98 Answers

SOURCE: Rough idle code P0300

check the fuel pressure when u get a po300 code that means there has been a missfire. if your fuel pressure is low it will cause missfires.

Posted on Mar 08, 2009

  • 1 Answer

SOURCE: I have a 2004 Chevy Malibu. Bogs down and stalls

make sure you have ngk or ac delco iridium plugs installed. Also common problem on the 2.2L ecotec is the cat plugging. Easy check is to remove the front o2 sensor (very easy 22mm wrench) and start the car and rev it. If it revs freely now and does not bog the cat is plugged. They are covered fed. emissions warranty 8yr 80k, all gm dealers stock the cats for the 2.2 ecotec.

Posted on Mar 25, 2009

anonymous_da
  • 75 Answers

SOURCE: 97 chevy cargo van 5.7liter engine. Replaced fuel

try to spray some carburetor cleaner inside where the air goes in the engine...it will clean the system and it might start...
press some gas when you try to start the vehicle...
good luck!

Posted on Oct 09, 2010

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Hello, here is a thread I found on this site with from what it looks like, the same problem(with an added solution) that you have. http://www.fixya.com/cars/t1576683-1999_cougar_diagnostic_code_p0430_p0420

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