tmsoko
Well-Known Member
- Joined
- March 12, 2001
- Messages
- 847
- Reaction score
- 3
- City, State
- Plymouth, MI
- Year, Model & Trim Level
- 2010 Adrenalin
OK, something has happened to my Mounty's fuel consumption. I have been getting 15MPG this summer combined. That is ~240miles per week highway at 75-80 and ~60 miles / week tooling around the streets. No aggressive / hard take offs, just normal driving. Also notice the exhaust tip is pretty black, running rich.
I have done a basic overhaul - fuel / air filters, plugs, engine / trans oil, belt. No change at all. Wondering on the black exhaust and its coordination with the poor economy. Thoughts are vacuum leak causing lean read at O2, then processor adjusting by dumping fuel? Another thought is O2 sensors or MAF sensor?
Before I just start willy nilly changing parts ($$$), wondered if there are any common causes / higher likely hood points to start??
Let me know the ideas!
I have done a basic overhaul - fuel / air filters, plugs, engine / trans oil, belt. No change at all. Wondering on the black exhaust and its coordination with the poor economy. Thoughts are vacuum leak causing lean read at O2, then processor adjusting by dumping fuel? Another thought is O2 sensors or MAF sensor?
Before I just start willy nilly changing parts ($$$), wondered if there are any common causes / higher likely hood points to start??
Let me know the ideas!