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2004 Cadillac cts Car would not start so i replaced the catalyst converter and after doing so it started right up but was making a ticking noise from rear of engine

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  • 373 Answers

Ticking noise sounds like a small exhaust leak. Get under car and run your hand near where you hear it. That could be because of the recent exhaust work. A small leak sounds just like a tick in the engine

Posted on Apr 13, 2014

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Posted on Jan 02, 2017

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SOURCE: Burning rubber smell inside car-2003 CTS Cadillac

Diagnosing this will be subject to a process of elimination. It could be the radio, blower motor or any other accessory particularly ones with moving parts; Try switching those off and try to note when this problem occurs and what is on/whatyou are doing. Something is getting hot causing the smell so it will be a situation where the accessory will have to run a while before doing it. It is a possibility that there is an electical curcuit overheating, but less likely. Lets rule out accessories first and give us an update. GL

Posted on Feb 04, 2009

rouseinator2
  • 24 Answers

SOURCE: Car makes grinding noise when I try to start,

You may need to install what they call shims in between the starter and the flywheel in order to align it correctly with the flywheel

Posted on Mar 03, 2009

  • 1 Answer

SOURCE: cadillac 2004 cts, wont start

i had a 2003 ctc that did the same thing, it wouldn't start or would make a clicking sound and about 1 mth after the problem started aND mechanics could not find a problem my car caught on fire and burned completely from something under the right side of the hood. i had just parked the car and got out, it happened really fast. the fire chief said the cause was unknown????

now i have a 2004 cts and i'm having the same problem!!!!!!!!!!!!!!! has anyone else had this happen???? please be cautious if your cts is doing this, during the fire my doors locked and had to be pried into by fire chief.

Posted on Aug 22, 2009

  • 3 Answers

SOURCE: 2004 Cadillac CTS won't start after oil change?

Did you also check the air filter? The Cadillac CTS is very finicky about the differential pressure across the air filter. Checking the air filter often causes the hose between the air filter box and the intake to come loose or start to leak. This will cause the car to run rough or die immediately after starting.

Posted on Oct 12, 2009

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SOURCE: cadillac cts cranks but won't start

My 2003 CTS would not start on the first, second or third try after filling the gas tank. Finally after several months of this occuring every two weeks a check engine light came on. It was the evac purge valve. Tom

Posted on Jan 08, 2010

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1 Answer

Misfires and makes a rattle noise when reducing acceleration and shakes at idle


Spark plugs,wires,coils. The rattle is most likely a heat shield on the exhaust. Or it is the catalyst converter.

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Will a 2003 ecm work to replace in a 2004 Cadillac CTS?


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I have a 2007 Cadillac CTS. When I turn on the car, there is a ticking noise for a minute which seems to come from the air vents on dashboard (not certain). Anybody know what this is?


It's possible that the ventilation system is fine, check your coolant level - radiator and reservoir, if they're o.k. try starting it (from cold) with no A/C, heat or fans going. If you still hear it, it may not be the vent system. Next, start again (from cold) with the heat and fan speed on high, and again, after cooling, with the A/C on high / max. If one of them is much worse, or much quieter, then you've narrowed the search drastically. Also, get someone else to start it while you listen to the car outside (pop the hood, stay clear of moving parts), try to pinpoint the noise using echolocation. the only other thing I would suggest is that you have a mechanic check the pressure of your A/C system, a small leak could lower the pressure enough to make the noise. Hope this helps, good luck.

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May 09, 2010 | 2004 Cadillac CTS

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Take the cap off the power steering unit start car and slowly turn to right and left to bleed air out of system refill and put cap back on.

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3 Answers

Cadillac 2004 cts, wont start


i had a 2003 ctc that did the same thing, it wouldn't start or would make a clicking sound and about 1 mth after the problem started aND mechanics could not find a problem my car caught on fire and burned completely from something under the right side of the hood. i had just parked the car and got out, it happened really fast. the fire chief said the cause was unknown????

now i have a 2004 cts and i'm having the same problem!!!!!!!!!!!!!!! has anyone else had this happen???? please be cautious if your cts is doing this, during the fire my doors locked and had to be pried into by fire chief.

Nov 24, 2008 | 2004 Cadillac CTS

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