Very recently my mpg has dropped from 18 to 11mpg. Anyone had this problem before??? I just recently installed the stillen z tube and a green drop in filter. I double checked the installation and it looks fine. My previous fx35 was fine when I installed a z tube and k&n drop in filter. The mpg is a significant drop equivalent of almost 50miles. Need some suggestions here. Thanks :disapointed:
MPG problem
- Thread starter JDMRyde
- Start date
regular
Member
- Location
- Houston, TX
Yeah mine has been like that the past 50 miles. display says 10-11 mpg. My valvebody in the trans is not sending an output signal and I have a service engine soon light for the past 20 miles, though. I think the FX is driving off in 4th gear or something, just bogging. its terrifying to see 10mpg on your NAV.
- Location
- Toronto, Canada
- Car
- 2008 fx35 AWD
clean the valve body then do a peddle relearn
- Location
- Riverside, CA
Transmission problem... It sounds like.