I am thinking they just used the box, because what i had broken/replaced looked identical.

 

they both look the same on the outside. I looked up the PN on the site and it says its a switch and will "move gauge to the extremes for high and low pressure or activate low oil pressure light" hence your 80psi gauge.

 

ok, so here comes my inexperience talking again. If I bought a switch, and I needed a sending unit, then where does the switch go, if it looks identical to the sending unit, and fits in every way??? I am confused now.

 

the switch is for the dummy gauges (the light on teh dash, you have a gauge there instead) a sender has variable resistance in relation to pressure to drive the gauge, you need a sender and not a switch.

 

I understand now, I appreciate all the help. I need to learn this **** better lol. So they should replace that for free, since I clearly asked for the sending unit, and explained exactly where it was installed. Yet another thing on my list of "**** that should of been done right the first time".

 

I think you need Advance PN S4133
http://shop.advanceautoparts.com/web...S_545500032___

If you get a chance tomorrow, call there and ask for Chuck
989-837-0901

Tell him about your jeep, and tell him you need a sender for the oil pressure gauge. Give him that PN and have him look it up and make sure its the right one. Make sure it will actually drive the gauge instead of just putting it to the extremes like you switch does.

 

they only sell the switch from what I read on there. thers only one PN for jeep oil pressure. See if you can get your money back, and go to advance, they have what you need.

here is from autozone:
if the advance sender doesnt fix your problems, you either have a bad gauge or bad wiring somewhere.

 

Ok, so I have all this written down. I will make all my calls on the way to class tomorrow morning, and hopefully get this all cleared up. Nice to have someone with answers, even auto zone couldnt tell me the issue when I explained it to them.

Thanks again!

 

hope it fixes your problem, if not, you have some work to do...

You can talk to anyone at advance, but Chuck seems to be the smartest. He helped me alot when I was doing my exhaust. He may only work nights though.

 

Put a volt meter on the hot wire that plugs into the sender. It should read 12 volts when unplugged and your pressure meter should be pegged high. Then short that wire to ground, Your meter should drop to zero. If it does this then your wiring is good and the problem is with your sender. If it stays high when shorted, or you get low or 0 volts on the wire, you have a problem with the wiring