I have just bought a new oil pressure gauge and i am just wondering what the best way to remove the factory sender unit from a 4age 20v fwd. It is in a hard spot to get to from behind the power steering pump, do i have to take the pump/belt off or is there a trick, and what size is the standard sender bolt?
I changed mine over from a pressure switch to a sender when I had the engine out so it was easier. However, I still needed to remove the power steering pump and bracket (which from memory required me to removed the bolts for the A/C bracket too). I then used a 14 mm open ended spanner with a bend half way along it (heated it up with a porta gas torch) as per Jason Percel's suggestion in his report on how to install a 20v in a AE92 (see 4age.net). If you try spinning the body of the pressure sensor, you risk damaging it - hence the need for the modified spanner. Hope this helps.