Oil pressure sender/switch?

[f@-pots]

Hi guys, yet more questions for the rebuild. There are two oil pressure senders built into my oil pump,one at the bottom which looks like a pressure sender for the gauge and one at the top which looks like a switch for the light. Ive got the wire that connects to the bottom one but cant seem to find a free connector for the upper one. Was it ever used? Bu*****d if I know ! Help!!

[chrispitman]

One on bottom of engine is the gauge, the one on the side up behind the alternator is the switch. The wire for the switch comes down the loom over the drivers rocker cover then down the gap between the alternator and dizzy single wire with blade terminal. Thats what I had on a 99 4.5 serpentine.

[f@-pots]

OK that sounds like the one I attached to the water temp sensor at the front in the middle of the inlet manifold-So if thats the one for the oil light switch ,where is the correct wire for the water temp sensor thingy then, cos I aint got any more spare wires left !!

[MikeTVR]

I've just changed the cam in my 94' Chim and found two senders in the oil pump/filter housing. The smaller of the two is undoubtedly the pressure switch for the panel light and the larger 35ish mm device will be the pressure transducer for the gauge, just as you thought.
On mine there is a single spade connector to the switch and a single eyelet to one of the terminals on the transducer. On the other terminal of the transducer is a spade connector which is left unconnected and appears to be an optional earth connector, but is also commoned to the metalwork.

If you removed the transducer don't do what I did and shear the adaptor which is very flimsy and difficult/impossible to source.

If you use PTFE tape ensure that there is earth continuity through to the transducer.

Mike

[f@-pots]

Cheers for that Mike, mines a 99 4.0 and I know there is a spade connector to the pressure sender and which one it is ,(thankfully)cos I remember removing it and that the wiring for it comes from the front of the car. The oil switch is now wired up with the connection I had used on the water temp sender(middle/front of the inlet manifold) so now all I need is a connection for the afore mentioned water wotsit. If it comes to it I'll just have to do without the guage for a bit till I can either find the connector or wire in a new cable. Once again Ta for the info.

Nick...............