- Joined
- September 1, 2002
- Messages
- 14,110
- Reaction score
- 1,711
- City, State
- Lake View Terrace, CA
- Year, Model & Trim Level
- '91 Navajo '99 X '19 Rngr
I still say its intake gaskets
With the upper plenum off its really easy to fix any broken vacuum lines
Staying tuned
Well guess who came back this morning. It's happening at higher RPM's every time. It always goes off when I'm on the freeway with load, going up a hill. It's actually almost predictable at this point. I'm hoping it's not the cat.

I'm going to have to run some tests and see what the fuel trims and the O2 are doing.