Gas mileage.

[BIG DOG]

My gas mileage keeps getting better.I went 347km on 32.5 liters of fuel.That works out to 29 mpg CND or about 24 mpg US with the hubs locked and in FWD the whole time so I'm hoping for even better when they aren't locked in.

[jtgh]

hey , you must have it running in closed loop, congrats!

[BIG DOG]

Yes I think I have it pretty much sorted out .The thing works like a top except for it stumbling or hesitating between 2000 and 2500 rpm when it's warmed up and under light throttle.It's like it just shuts off and I'm getting so if I want i can keep it off for 3,4 maybe 5 seconds (maybe this is why my mpg is getting better LOL).As soon as I move the gas peddle it will take off.I travel the same road to work everyday and there are a few spots where you go up a grade then level off or go down a grade when I get to the level or down hill parts and you are relaxing the throttle it will shut off .But if I down shift and keep the revs above 2500 no problem or up shift and keep them below 2000 no problem.It's not like a stall but more like you just shut the key off for a sec or two.Next on my list is the throttle position sensor my suspicions are there.

[jtgh]

could be oxy too.

the tps ask like an enrichinment device when hot.
and also cut throttle , deaccel mode.
or dirty maf, could need a shot of cleaner.

the oxy can go bad a tad and signal rich (when not ) and car will go lean, causing
hesitation.

[BIG DOG]

I just replaced the O2 sensor my luck it would be bad.If I unpluged it when it was warm would that tell me if it is it?