Urgent please: How to undo oil pressure sender unit

[benl1981]

I'm borrowing a gague off someone to check my oil pressure as my gauge often reads 0 at idle. I am trying to unscrew the sender unit without taking the oil filter off. I have a piece of high grip pad but I can't seem to loosen it. Anyone have any ideas.

Thanks

[Duncan]

haha sometimes the pics don't help do they? its a little metal cylinder with a yellow plug on the end, 90o back from the oil filter

1/ Remove the plug (under a dust cover) on the back

2/ Unscrew the sender anticlockwise, off it comes

[benl1981]

Should it come off pretty easy. I did find it but was having trouble removing - I even borrowed a tool that latches onto the back of it (i.e onto the hexagonal piece on the back) and you connect a 3/8" bar to it. Maybe if I remove the plug it may work better.

I've decided to just do my timing belt first as I don't think the oil pressure is a problem. I wanted to check it in case it was the oil pump - in which case doing the timing belt I am almost at the pump.

Meanwhile since I've played with it a bit I couldn't get it to read much beow the 2 mark on the stock gauge..

Thanks Duncan

[The Dan]

You can use a 14mm spanner on the closest side to the block. Easier to get at from underneath and behind the R/F wheel. That is of course if you can get underneath.

On the issue of your oil pump....if you own a skyline, which I assume you do, you cannot remove the oil pump without removing the sump. Do not even attempt to as you will wreck the sump trying and you won't be able to re-seal the pump when you figure out you have gone too far. Also, you probably won't be able to get the timing belt lower gear off for reasons I won't get into, which means that removing the pump will be almost certainly near impossible without either breaking the gear or the pump. If you have any queries PM me and I will be happy to point you in the right direction.