2008 CTS AWD DI
I’ve searched a lot on this forum and never found anyone that had the same issue as myself. I bought a very nice CTS in September of last year. 52,000 miles. Occasionally I would get a slight hesitation which turned out to be misfires that we’re pretty random but mostly contained to bank 1. No codes were set. I could see the misfires in mode 6 on my BlueDriver scan tool. This continued for a few months until the car would die randomly when I came to a stop, most often after crushing speeds like when exiting the freeway. It would always start right back up. I have a clone Tech2 that also never showed any codes until I got P0341 for cam sensor. It failed and passed and never set the cel. I replaced all the cam sensors and the crank sensor while I was at it. Nope. I then without any codes to go by started small and kept going until I solved the issue. I did have the fuel smell from the tank so I knew I needed to replace the in tank pump. Did that. Nope. No more fuel smell though. (The old pump tested in spec). I then went for the HP fuel pump since I would show pressure drop down to below 200psi on occasion. Nope. Well, since I enjoy working on cars, and have since I Was 12 (51 now) I figured hey it wouldn’t hurt to put new fuel injectors in it. Did that. Nope. Used all OEM parts and replaced everything called for in the process. Well what next? I didn’t have any chain noise but I replaced the chains with the Cloyes kit. It was great for 4 days then did the stalling and misfires again. Dang it! New cam solenoids were next. Nope. It was clearly related to timing so of course the next thing in my mind was the phasers/actuators. I bought all four and the washers just in case. I replaced both on bank 1 just to see how that worked. Perfect. No misfires and it runs great. I drove it all week. I measured cam endplay and I didn’t need the washers. No room for them. Everything I have read said that the actuators rarely fail. I will go back and do bank 2 when I feel the need. Not a bad job if you spend a few (maybe a lot) on the chain holding tool. It prevents having to take the front cover off. The engine was really clean on the top without any Sludge so I felt good seeing that. I really like the my car and use it for a commuter and will until I find the right deal on a V. I sure hope this helps someone. Never posted anything before.