Question about Chevrolet Cavalier

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Engine runs rough check engine light

In the mornings I start my 2004 cavalier to warm up. Came back in about 10 mins check engine and trac light are on. Put in gear runs rough bucks and back fires then dies. Have changed the coil pack twice now any ideals>

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  • Chevrolet Expert
  • 495 Answers

What code(s) have you gotten?

Posted on May 08, 2014

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Posted on Jan 02, 2017

Ticodude
  • 53 Answers

SOURCE: #5 cylinder misfire

I have a corolla and had #4 cylinder misfire also diagnosed at autozone. After changing the spark plugs, problem persisted, along with the same error code, so they recommended changing the spark plug wires, and that is what fixed it. I would have changed the rotor cap too, but was low on dough. Glad that was not the problem.

Posted on Dec 29, 2008

  • 58 Answers

SOURCE: 91 LEGACY STARTED RUNNING ROUGH

The cylinders are numbered as on the spark pack you changed. You might have done better putting the seafoam in the tank as an injector cleaner. Not sure why you changed so many parts, you seem to know how to get the codes from test connector lead hookup and the blink pattern. You might also want to check the fuel rail pressure and the crank and cam angle sensors. Before replacing the injector, swap the #4 injector with the adjacent one and see it the code moves with the injector or stays put. If the code stays on #4, then check the injector wiring, if it moves clean or replace the injector.

Posted on Mar 21, 2009

matney68
  • 426 Answers

SOURCE: 2004 Cavalier-ABS and Trac light warnings

no you need to take it and have the codes pulled on it, the abs system will disable the traction control system.Without knowing what the codes are for the abs system it would not be possible to say what the problem is.

Posted on Jun 19, 2009

  • 94 Answers

SOURCE: Check engine light flashes sometimes and runs rough

A flashing check engine light is a critical indicator. That usually means that something went wrong that will damage the emission control system... and that is usually an ignition issue. First off, the OEM plug your car calls for is an NGK irridium... NOT BOSCH and not anything with more than 1 prong. Those NGKs are like 2 bucks and they are the proper plug. Make sure you have these plugs and make sure they are gapped to .028. Next, my suggestion is put all the new stuff on again. Drive it to autozone and have them delete all the codes. Drive it around until the check engine light comes on again, then immediately go back and read the codes. The ECU is smart enough to know which cylinder is misfiring. On these cars, I think they have three banks of two... meaning one "coil" inside the coil pack operates two of the cylinders. So if you get multiple misfires, it's the coil. If you get one misfire it's probably an individual plug wire or plug. Good luck.

Posted on Jul 15, 2009

  • 117 Answers

SOURCE: My servie engine light is on with the code PO108

the problem is youer map sensor or wirers to sensor
code p0108.is Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Posted on Nov 12, 2009

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My service engine light and trac off light are on


It sounds like you need to replace your computor. You could try resetting the computer first. The car maybe in lockout mode. Try turning your car over….leave the ignition on. Wait exactly 10 min. Then try turning over again….again leave the key on. Wait exactly 10 min and do it a third time….this time the car should start…maybe run a lil rough while it relearns the processes of your vehicle again. It is important to wait the exact 10 min each time. You will probably need a battery charger or a set of jumper cables because if your car goes low during this process it will not work. Good luck and I hope this works.

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a gas cap loose is not going to make it run bad. you wil need a qualified repair shop to ck that .

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yes go to the junk yard and match up the plug in with the same engine size it dont have to be the same year

May 31, 2009 | 2004 Chevrolet Cavalier

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Are you using a gel based battery?
Sounds like an overload on the charging system screwing the whole electronics of the car.
If not - get it diagnosed at a dealership.
Sorry.

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