Hi everybody from Auckland NZ. Joined up today to find info on surging with my 07 Grand cherokee 5.7. All started when I first began to play around with my own coldair intake modification. Have since installed a Mopar coldair intake, still surges.
A well known machanical company over here charged me $1890 to check the vehicle over and replace the cats because one of them rattled a little(yes I know
). On the short drive home it was sweet, thought they had fixed the problem, but the next drive, I hit the highway and it seemed they had now double the surging problem
Next I tried a company who had a 4 wheel drive dyna. Once again the drive home was great ( longer trip this time ) but the next time I drove it, it was back to it usual surging. I have read a few blogs and are wondering if these so called mechanics I have been using can detect a faulty 02 censor, but then again why now I never touched them when I was installing the air flow
I have limited mechanical knowledge so I am totally reliant on others mechanical nous . I am certainly learning a lot now though. cheers