Question about 2003 Cadillac CTS

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Car staaling I have a Cadillac CTS 2003 91000km No warning and no light coming on just started to stall out and you wait about 10min and restart ok only seems to happen every other day what could it be causing it to stall?

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  • dick248 Sep 27, 2008

    I have the same issue of the CTS stalling for no reason. I found that I had a short in the ignition key. My knee would hit the key chain dangling down and in just the right circumstances the ignition would short out and the call stall. I replaced the ignition switch and the problem was solved.

  • slillegard Dec 23, 2008

    My 2003 CTS is also stalling without warning, but also has been stuck in the crank mode sometimes when starting. I noticed from another owner that he replaced the ignition switch. This might be the fix since both could be related to the ignition switch. Does anyone have experience with this issue?

  • Anonymous Dec 23, 2008

    I had that happen and had to replace a sensor located on the engine. The sensor is supposed to keep the engine from getting too hot. That's why it shuts it down. Only when the sensor isn't working correctly it shuts the engine down even when nothing is wrong. When the engine cools it starts and runs okay until the sensor decides to kick in again!! Cost me around $300 to replace the sensor.

  • Anonymous Mar 23, 2014

    the truck will start for a second then stall then does the same thing few more times then wait few minutes and starts up

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I had a similar problem the car would start fine then when driving it would just stop - if i waited long enough it would restart just fine and the same thing would happen. I replaced the crank sensor and the cars been running fine ever since. Even though the sensor ohmed good when cool???

Posted on Dec 29, 2008

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Hi, this sounds like a cloged fuel filter ,,also add a good fuel injection cleaner good luck...

Posted on Aug 31, 2008

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1 Answer

My car wouldnt start and i m wondering if its the battery or electrical.


I suspect that the battery was boiling from uncontrolled charge rate. Have the battery load tested and have the alternator charge rate checked.

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1 Answer

2003 cts stalls out when i stop


Sounds like the Crankshaft Position Sensor. Its about a $50 and 30 - 45 minute fix if you are handy with cars.
Try this link.
http://s705.photobucket.com/albums/ww55/bw5234us/Crankshaft%20Position%20Sensor%202003%20Cadillac%20CTS/

I did mine in about 30 minutes. I used a 1/4 drive, u-joint and a 12" extension instead of the thumb wheel. Worked great. Good luck and hope this helps.

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1 Answer

Have a 2003 cadillac cts my car will crank but not turn on some times it will start but i will be driving and get to a red light and it will completly shut down on me it does not always do this at times it...


how many miles are on your car ? will it start up after it shuts down or do you have to wait 20 or 30 min. had a problem like this with my own car it had 1600,000 miles on it. do you have any warning light on dash when this happen, if not, it's most likley it is the crank position sensor. it's about $60.00 at the dealership, not fun to put in. also could be a fuel pump problem, have a pressure test done on pump first before you buy a pump it is about $400.00 + $600.00 to put in. I haven't seen to many pump problems without a lot of other issue while driving. If warning light are on, have the computer scanned first.

good luck bro,
i have done many CTS's like this and all turned out be the sensor.

Feb 11, 2011 | 2003 Cadillac CTS

2 Answers

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the light will clear after three drive cycles of over 10min each let me know if this helps you

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My cadillac shuts off when i come to a stop the battery drops from 14.7 to 12.1 everything will stay on lights radio , and my car wont start. if i wait a while and hit the breaks and gas it will start up...


I'm Going To Assume You HGav The 3.2L Opal Engine. These Were Most Common For The Crangshaft Position Sensor Failling When Hot, Causing A Stall. When The Vehicle Stalled The Sensor Would Cool & The Engine Would ReStart. This Would Repeat Over & Over, & Over...
If You Have Access To A Scan Tool, Check For DTC P0335, If It Does Even As History, Replace The CKP Sensor First.

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1 Answer

Check engine light comes on and car starts to downshift hard


Please take the car for a scan to reveal any problem/ error codes causing this.

Good luck,

Jul 15, 2009 | 2003 Cadillac CTS

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