Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2005 CTS Misfire #4 cylinder in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I have been troubleshooting my CTS 3.6 to determine why #4 cylinder is misfiring. The computer sets two codes one ...
- 11-27-13 05:56 PM #1Cadillac Owners Member
- Join Date
- Nov 2013
2005 CTS Misfire #4 cylinder
I have been troubleshooting my CTS 3.6 to determine why #4 cylinder is misfiring. The computer sets two codes one that identifies random multi misfire and the other open fuel injector circuit #4. I swapped the #4 coil and injector with #1 and cleared the codes. After running the engine the computer set the identical two codes. I have replaced the plugs and changed the oil and filter. I cleaned and inspected connectors, tested wire from #4 injector to CPU wire tested good! Does anyone have any suggestions what I should test next?
- 11-27-13 07:17 PM #2
Re: 2005 CTS Misfire #4 cylinder
- 11-27-13 07:24 PM #3
Thanks for the reply. I Swapped #4 injector to #1 cylinder and the misfire stayed with #4.
- 12-12-13 11:35 PM #4Cadillac Owners Fanatic
- Automobile(s): 06 SRX 3.6L 2WD
- Join Date
- Mar 2004
Any progress on this issue?