Since i got my jeep, its been 60-80 psi all the time. I did an oil change yesterday and now its at 80+.

Any insight why?

 

I am commenting because I am also curious cause mine sits at 60 at all times, whether idling, accelerating, etc.

 

Could be faulty oil pressure sensor. High oil pressure is not bad IMO

 

its not bad. deffinitly change the sender its cheap, and you can always return it if its not the problem.

 

High oil pressure isn't bad. Probably not a bad sensor. What weight of oil are you using?

 

Just 10w-30

 

even with 20 50 on a fresh rebuild, I'd highly doubt the 4.0 would see 80 psi. I have a good non burning non leaking 4.0 ho and with 15 40 i see about 45 - 50 psi. so with 20 50 + lucas id say they could get maybe 65 - 70 psi, but not 80 + its more than likely a bad gauge.

 

Well I'm not sure how cold it is where u are but that can effect oil pressure. The main thing I would look out for is blowing out your filter, otherwise you shouldn't have a problem.

 

A faulty sensor or gauge?

 

Correct!
Mine sees about 16 when warmed up at ilde, but its well over 300k & it rises up to about 4045psi when I accelerate which is good.. Cold idle I'd guess its 45-50psi.

 

I was asking more which one in particular, he sensor OR gauge? Haha. But its at 80+ at idle, and when i accelerate it goes off the charts. At a full warm up its still in the 70+ range

 

Change the sensor, and if it doesn't change then its the gauge..You can just take the new sensor back and put your old one on.
Did this just happen out of the blue or after a oil change or?

 

Its always had real high oil pressure. But after the oil change is when it got worse

 

Theres always a chance that its just sludge built up on the sensor like mine was.

Bought my XJ and PSI was reading max all the time. Pulled out the sensor and it was covered in sludge. Before buying a new one I got a tooth brush and a can of carb cleaner out and went to town, works fine now and didn't have to spend the like $30 on a new one.

 

I think i'm gonna try this. Where's the sensor at?