[V8] MPG - Final Chapter for now!

Jason Wilkerson wilke_jb at yahoo.com
Thu Apr 26 13:41:08 EDT 2007


Wow, great response as usual, thanks!  Take this note into consideration -
If this would have been my only v8 I would not even question this problem
- I just know that my first v8 (that was exactly the same car- trans,
year, motor) would get 18.5 in 50/50 harsh mountain/Interstate driving -
this one gets 14.5 in town and gets about 16 all interstate.  Maby that is
ok - I just don't buy it.  Let me answer all of the questions if I can
remember them all - they are in order:

1. Mass air has been changed to a known good unit. - no change in MPG
2. MPG 14.5 in town, 16 all Interstate
3. Automatic - just like my old one
4. Gutted Cats - just like my old one
5. Exhaust restriction - doesn't seem so - it seems to put out a lot at
the pipe - but I could check back pressure I guess.
6. 3.6L - just like my old one
7. Drive the snot out most of the time (6.5K shifts, etc.)- just like my
old one
8. Re-sealed intake and injectors, although I didn't split the intake -
maby I need to.
9. Haven't replaced Coolant temp sensor - it specs out - But maby it is
flaky - I will try it next time I get a chance.
10. No difference with or without O2 hooked up - except it throws an O2
code.

         Thanks again for all the response,
                                 Jason


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