age is only a number
AO Gold Member
Join Date: Aug 2004
I'm sure there are umpteen threads about this, but I can't be bothered checking for you...so - yes, its a pretty easy job, although removing the old one can be a pain as the wiring is clipped onto the rear of the engine with silly clips that can defy undoing ;-)
Generally reckoned to be easiest to remove the battery and the inlet trunking - maybe the throttle body - I didn't, but I got scratches on my forearms as a result. With that stuff out of the way, trace the wiring from the brown plug on the top of the plenum and it will lead you to the sensor, lurking under the starter. Normally held in with a small Allen screw, but sometimes a regular bolt. Once you've undone the screw/bolt the sensor can be tight to move, but will usually free off if twisted/levered - then it just pulls out - it should come out with a sealing ring - if not this needs hooking out afterwards - or remove the ring from your new one - having both on place won't work.
Refitting is a reverse of removal as they say.....
some people say you should do this job from underneath, but the above is how I do it, takes about 15 minutes once you know what you're doing - first time maybe 30 minutes.....
AROC Vice-Chairman and Lancashire Section Secretary
Alfa organ donor to the gentry......