Question about 2006 Cadillac CTS

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Engine running rough and idles rough with engine warning light flashing

The engine warning light came on and the engine started vibrating (running rough). the engine even vibrates (runs rough) when the car is at idle.

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  • Anonymous Mar 27, 2014

    Car running rough causing motor to vibrate and very low power

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What are the codes

Posted on Dec 03, 2012

  • al young Dec 03, 2012

    I do not have a machine to give me codes. where would I find the codes if a macine is not needed to retrieve the codes?

  • teds repairs
    teds repairs Dec 03, 2012

    any part store can scan the car for the codes

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: I recently purchased a used 03 cadillac cts with

It sounds like you may have bad plugs or wires However if they changed the timing chain I would be very concerned that it is doing what your saying, I would suggest you take it to an independent shop that is ASE certified and has the scanners to test it s you don't destroy the engine. Get someone who has nothing to lose, and spend the shop charge to test the engine and if he has to remove timing belt cover and make sure it is not loose. And do not drive 700 miles you will be stranded and the cost to fix it out of town will be more. At that shop tell the guy what was done but don't mention dealer name or any name for that matter keep that to yourself.

Posted on Sep 01, 2009

  • 6982 Answers

SOURCE: rough idle after warm up

I'd take a look at the temp sender...the engines computer may be "thinking" the engine is still cold when it's not. That would cause it run rich (and rough) after it's warmed up. Generally the sender can be tested with an ordinary volt/ohmeter but you will need the specifications available in most inexpensive manuals. As with any complicated electronics system, I can only give you my best guess, without the luxury of doing any hands-on testing myself.
Good Luck!!

Posted on May 28, 2009

  • 1 Answer

SOURCE: 95 cadillac eldorado engine stalls rough idle check engine light is on

I have a 95 eldorado that is starting hard and idling rough. Also noticed gas pedal fluctuating. I have been told it is the Fuel Pressure Regulator. Does that sound reasonable?

Posted on Jul 09, 2010

SOURCE: i have a couple codes P0335,P0385,P0171,P0174. My

Resolve trouble codes and try again, if car runs ok no problem if not, write again.

Posted on Jul 16, 2009

  • 113 Answers

SOURCE: 2000 catera cold start idles rough and dies. After

Did you have battery disconnected or dead recently?

Try to place ignition in run without starting engine for 3 minutes (shut off all accessories and lights etc..). Then shut it off and then start it. Should relearn the idle.

If this doesn't fix the problem, unplug the MAF sensor, if it runs fine with it unplugged, its the MAF sensor.

Exactly what happened on my wife's 01'.

Posted on Jul 25, 2010

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