Pegged Oil Pressure???

Well I posted this on Blue Mountain Jeep Alliance first off, but figured it wouldnt hurt to get a second oponion from the XJ people.

Heres the deal...I did the gauge cluster swap from dummy lites [GREAT write up by the way], and recently I noticed the oil pressure peggs wayyy past 80# sometimes when I am on the highway at about 3000RPM's. Only does it sometimes, and actually does it sometimes when Im racing up a hill with a runny.

Idle pressure is about 40/50ish #s. Stays pretty much the same when Im just crusing around, anything below 3000RPM's.

Any idea what might be wrong? And how to fix it.
Thanks for the time.

first thought is sensor... i know i've seen something on here fairly recently on the gauge swap & sensors, dummy lite sensor isn't compatible with gauge...

i'm sure you'll get a better explanation than this...

Thats the thing, I put a brand new "guage" sensor in to replace the "dummy" sensor.:helpme:

You didn't put any sealant or threadlocker on the gauge sensor when you installed it, did you? If requires a good clean ground through the sensor fitting - depending what year you have, the gauge will show pegged if you disconnect or break the ground circuit on the sender.

Jim www.yuccaman.com

Nope, no threadlocker, teflon, sealant, or anything like that. And its only some times [like I said] that it is pegged, not a constant thing.

Mine would occasionally peg. I disconnected the plug and cleaned the contacts; hasn't pegged since. They were oily/dirty. I guess the watertight connection isn't oil or dirt proof.

Thanks, I'll try that and see what happens. Any other ideas if that doesnt fix it?

tyspier said:

Thanks, I'll try that and see what happens. Any other ideas if that doesnt fix it?

Click to expand...

You may have to "run the wires" to see if you have a rub that is shorting out the sensor whenever it rubs just right.


Pippen

I had this issue on my 94 and it was the oil pressure sensor.