From the excellent wealth of knowledge on this site I have already been able to "Self" Diagnose that my MAF was dead. So thank you Bimmerwerkz
Seeing as my MOT was due I ordered the MAF in the hope that the garage could fit it whilst car was being MOT'd. The garage have phoned to advise that I have purchased the wrong MAF for the car. The car is still in the garage so I cant check the numbers against the original MAF, so I was hoping that someone could let me know if they think the one I've bought should fit.
I have a 1998 S, 525i SE.
The part I bought shows compatibility with the following numbers:
8ET 009 142-021
Or alternativley if anyone knows of a website where I can punch in my Registartion\License plate number to check against the original parts numbers.
Any help is greatly appreciated.
Kind thanks, Steve