Well it's 2013 now with the P0153 code coming on after 20kms of driving now. I'm beginning to think a rookie mechanic should find the problem now since it is regularly sending the P0153 fault code now. The dealer with $2K of my money has changed the PCM without success and thinks the wiring might be at fault or it could be an exhaust leak. I thought they checked both the wiring and exhaust system before replacing parts (PCM, Cat, 4 O2s) but clearly the profit is in parts replacement on the customers Visa. Again any help or ideas would be appreciated to solve this issue.
Go 4x4 It