Question about 2000 Cadillac Catera

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Car won't go over 15mph i change spark plug coil packs after getting codes po302 po303 po301 po306 misfire also i had code po650 i get good fuel pressure when first start it runs real rough for about 4 min. then it smooth out but the engine raises only to about 1800-2100 RPM

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  • pimp6334 May 27, 2010

    when you press the accelerator it has no power but it won't kill

  • pimp6334 Jun 01, 2010

    yes maf sensor was the problem THANKS!!!!

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2 Answers

You will need to replace the MAF sensor, click on the link below to read more. There was also a recall on your vehicle about the PO 301-306 error codes, click on the link below and scroll to number 38:

http://www.edmunds.com/maintenance/recalltsb.html?type=tsb&styleId=1046&zip=

http://www.cadillacforums.com/forums/cadillac-catera-cimarron-forum/77755-p0300-p0301-p0302-replaced-maf-sensor.html

Posted on May 27, 2010

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  • Master
  • 1,902 Answers

Check your EGR and IAC valves. Make sure that they are working correctly. Your EGR valve can cause this issue and so can the Idle Air control valve.

Posted on May 27, 2010

  • pimp6334 May 27, 2010

    when you press the accelerator the engine won't raise just misfire and it won't kill when you take your foot off the gas it run good again but you smell gas but it not real loud but noticeable


  • Jeremy Reddick
    Jeremy Reddick May 27, 2010

    The EGR valve would make it so that you smell gas and not make the car die. Everything that you are describing matches to the EGR or IAC valve. The only other option is for your coils to be bad, but that would not make the fuel smell. I had a 2003 ford escape that was giving me the same issue, I replaced the EGR valve and the car ran just fine after it was done. I have also seen this a lot of times, it is one of your cheaper repairs that you can do before moving into the more technical side of things.

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CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


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Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
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- Fuel injector #1 may be faulty
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Solutions:
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P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
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Solutions:
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