Would i be right in saying that the coolant temperature sender sends a signal to the temp gauge as well as to the ecu to control fuel?

Just trying to sort my poor mpg.

If the sensor was faulty would there be a fault with the gauge too or not necissarily?

Just wondering is it worth changing, ive no fault codes etc and my gauge sits dead centre and doesnt budge.

also anyone know how to test the MAF with a multimeter? What voltage or whatever id be looking for?

Cheers

Edited 1 October, 201213 yr by billybaggins

unplug the maf and go for a drive, if the car behaves the same then your mafs ******

the car isnt playing up though, drives fine, just returning about 44mpg on a 100 mile run and average 40 all other times.

the car isnt playing up though, drives fine, just returning about 44mpg on a 100 mile run and average 40 all other times.

Suggest it's faulty MAF.

I know Ant-Vrs had the same issue.

even though it drives fine? i had read of peoples car was driving poorly. might bite the bullet and get a MAF sensor then. Wheres the best place to get one?

No necessarily, i had the same problem and changed the maf and it hasnt helped much