Drop in MPG's

[Junster]

Cold is really hard on 02 sensors. They need to be hot to work right. If they don't send the right mixture info quick enough the ecu will go to a open loop and ignore it. The mix will be like a carb thats got a stuck choke. This would explain the EGR problems many seem to be having. Running rich clogs the EGR. Also extended "warming up" will. Do these motors have a 1 wire or a 3-4 wire 02? The one that's on the engine side of the catalytic converter. The one aft just reads how the cat is doing. OBD2 vehicles always have at least 2. 1 wire 02's depend on exhaust gas temp alone to warm them. 3 wire 02's have a heating element in them, 4 wires the extra wire is a extra ground for the sensor cause exhaust hangers are rubber and sometimes the exhaust pipe itself has a very poor ground. If it's a 1 wire and replacing it doesn't help try wrapping the exhaust with header wrap about 6-8 inches above and below the 02 sensor. One more thing, did you accidently unplug your 02 when doing the axles? If you replace a 02 disconnect the battery. They can be sensitive and they are expensive.

[Ldub]

Did not remove the rotors.



I more or less moved back from Aiken, SC to Cincinnati and worked the CV boots shortly after.

The gas makes the most sense to me, because I KNOW I did a good job on the CV boot change out.
I hate this, becasue it's got in my head that if the VX starts to go bad, then I need to look at another car and it probably won't be another VX. Those thoughts make me feel dirty.

FWIW...

I usually get less than 10 mpg during typical winter driving around town.

Granted, even though I'm typically driving on ice glazed mondo tundra, I still have an incurable lead foot...

What can I say...I love to feel like Ken Block when sideways is an option on any given corner. I also love being able to kick MAJOR ash from one light to the next, on whatever vehicle chooses to become the next victim...

That being said, on last weekends road trip with Hunny Girl, we averaged nearly 14 mpg on winter blend fuel, & most here know that I've committed every mileage "sin" there is to commit...

I'm expecting the usual 13-15 mpg on the road to Moab in May...with tool/tire trailer in tow.