lee rb5

does any body know the correct way to test a maf sensor on a 1999 impreza or possibly a link as the readings i am getting with my multi meter are making me think that the 1 that is on my car is faulty and we all know how dangerous that is!! thanks in advance.

KJD Mk1

iTrader: (3)

TBH I'm not sure if they can be tested other that a fault code via the OBD port thingy.

Is the car running poor?

"Taylor"

iTrader: (2)

Don't you just unplug it and if the car continues to run, it has learnt to run without it, ie faulty.

lee rb5

thanks for the quick replys guys, the car seems to be running ok its just that i read that if its faulty then this can cause major engine damage which i would like to try and avoid as you can imagine, if i disconnect it with the engine running the car does not cut out, is this bad?

matscooby

iTrader: (3)

Taylor thats correct, just let the car idle and disconnect the maf connector and it should turn off, this means its working. Though if u have doubts , change it. £100 ish for a maf, £000's for a rebuild

KJD Mk1

iTrader: (3)

If the car is running fine then I cant see you have a problem, yes faulty mafs can cause problems but not for a short time if you take it easy.

Rally fan 555

iTrader: (7)

I had Maf trouble mate, the car ran after it was dis-connected, I bought one on here for £80 and it now works fine, conks out if unplugged