^ the oil filter is definitely not related...

have someone jiggle the connector on the oil pressure sending unit while you watch the gauge. I bet you it'll raise. That connector has issues with its contacts. Mine does it occasionally.

 

STP, Purolator, Motorcraft, AC Delco anything but fram

 

Where is the sending unit

 

Right above the oil filter. Its a little black cylinder bolted by the nose to the block

 

Its the electrical plug you need (I do) to remove in order to pull your filter out up through the bay.

 

Someone point it out...yes I know that one thing is un plugged I just did that

 

This is on my '91, your may be slightly different since you have the gauge and i have the low oil pressure idiot light but its the same concept. Its the little thing shaped like a stop sign to the left of the distributor, thats where your sending unit threads in to.

 

Damn my pic didn't attach to last post

 

How hard are they to change??

 

At the base of the goldish colored sending unit (the part you removed the wire from) there is a place where you can put a wrench on, its probably 7/16 or 1/2. Just turn it out like your removing a bolt and replace it with a new one. It probably wouldnt hurt to put a little teflon tape on the threads either. Like what somebody said before, go with an OEM part from chrysler or else the gauge might not be accurate.

 

Easier to access from under the jeep or no?

 

What's so bad.. with a Fram filter? realy..

 

I've actually heard it s bunch that fram is lacking compared to other filters

 

Well it would be easier to access from the top, if you really need to you could remove a few plug wires from the distributor so the wrench dont get stuck in them. Just make sure you dont mix up the firing order

 

How much do the jeep ones typically run