re-adjust fuel mixture

[nighttalk]

oki just replace my MAF sensor on my 2001 qx4 2 about weeks agoand i found out now my qx4 eating more gas than beforedoes anyone have any idea?or i have to readjust the mixture?

thanks

[fukkeneh240]

can you r51 guys adjust gas mixtures? I assuming you mean air to fuel ratio and not specifically gas mixtures...

have you check for any codes?

I am also assuming that the ECU would automatically recalibrate to the new MAF. did you reset the ecu after the install/replacement?

[pathfinder9035]

u have to drive it for a week or two and then the ses resets itself because the ecm has to relearn everything. At first my mpg was down but now its back to normal. and u got to factor in the cold also...your gas mileage is horrible in the winter.

[nighttalk]

okthanks for replyyes...i understand that during the winter time...the mileage is bad...but shouldnt be THAT BAD....i got 80km less than before(per tank)i have this car for like 8 yrs already(my previous car also qx4)just the first time to change maf sensor

and yes...the shop already reset all the code and stuff...now start running the 3nd tank since i change the sensorand yah...now is a little bit better than 1/2nd tank...

hope it will back to normal soon...gas price isnt cheap here....90cents per liter...-_-

thanks again everyone

[KLL]

yes , it learns again. I experienced this 3 times. After replacing battery and leaving it without battery for few hours, it started to consume more. After almost two tanks, it retuned back to stock state.