lol that's insane...makes me wanna kick myself in the *** for going so long with this ****tyass mileage...

 

I don't know now, I changed my o2 up and it seems to have lost millage agian... Anyone have ideas on how to get the computer not to relearn?

Chris

 

just make sure you buy the OEM one, those universal ones are junk.

 

Does anyone have an idea for my new o2 sensor, I put a new one improved performance significantly, now it is back to where my old one was. Do you think this one has burned out already? Only about 1000km's i put on it.

chris

 

My milage is also horrible on my 4X42000 Dakota QC with a 4.7 engine in it. I have 3.92 gears and im only getting about 14mpg on the highway @ 70 mph.I also have no lights coming on.

My brother has a 4 door Silverado 4x4 with a 5.3 and gets 20mpg @ 70mph. I love my truck but cannot handle the gas milage.

Any suggestions?

Bill