Originally posted by rozwell911:
I have a 1999 SVT, and I just replaced the fuel pump and sender unit. AND now it seems like Im getting bad fuel milage too. Originaly I had a bad sneding unit. ANd IO know this one is funtioning normal.

What would cause this bad mileage? Could my previous Sender have been that bad??


Roz


The sending unit has nothing to do with your mileage. It is just part of the guage to give you an estimate of what is in your gas tank. Since your pump was replaced and if the old was really bad maybe this one is pumping more fuel and causing it to get a little lower mpg running rich. The computer will compensate for it and it should be back to what ever you were getting before after a tank. Plus if your other card was faulty then this one will defenitly show a diffrent reading on the guage. Both my SVT and Wifes Mystique get 22 to 28 mpg depending on driving. I check it everytime I fill up.

Green 2000 SVT #1166 mods-K&N and Custom heat shield, optimized y pipe, Magnaflow center resonator, DMDhttp://www.geocities.com/savinoss/Cars.html -Wifes car 99 Mystique V6 5 spd