Rough Idle- No Power - Misfire 1-3-5 Camshaft Sensors Bank 1
2010 Traverse LT AWD
If someone has solutions to this or ideas that would be amazing. I've searched everywhere and can't seem to find a solution.
I was driving 55MPH the other day when I lost all power and check engine light started flashing. As soon as I was able to pull off to the shoulder, I checked codes immediately.
P0300, P0301, P0303, P0305 (Misfires on bank 1, cylinders 1-3-5)
P0342, P0368 (Camshaft A and B on Bank 1)
P0102 (MAF A Circuit Low)
Before all of this, I was throwing just codes
P2097 (Post CAT Trim Rich) and
P0119 (Coolant Temp Sensor Intermittent)
I've check and changed both Camshaft Sensors, along with Bank 1 Downstream O2 Sensor.
I've taken off the intake manifold, and the valves definitely have carbon buildup on them, but would this really cause the engine not to work properly?
The timing chains were replaced 3500 Miles ago, along with a faulty Cam Phaser on bank 1.
The car has run smoothly since then, except for the CAT and Coolant Sensor codes going off.
I bought this vehicle used about 3800 miles ago. All new plugs, and coils seem fine.
It looks like the same O2 sensor was replaced before, or the pig tail on the sensor broke on its own.
When I idle the vehicle, the exhaust pipe will be super hot for bank 2, but isn't even really warm for bank 1.
What would cause just one bank to misfire on all three cylinders at once? Does anyone have any solutions? I'm running out of things to check. My mechanical knowledge is far from superior, but I can do a lot of work on my own with the aid of YouTube and forums like this.