Oil pressure gauge reading

Hi all.
Exact same problem. Starting it cold, good pressure. When the oil heats up, after about 10 minutes, the gauge falls to zero when I stop at a red, it beeps and the “check gauges” light comes on.

- brought it to dealership, he hooked up a pressure gauge and showed me video of it working fine.

- I’ve had oil changes, still happens.

-I replaced the sender, still happens.

- oil is not leaking anywhere. Dipstick reads the same as it did when I got my last oil change.

Kind of at a loss. Might try heavier oil. Is that bad for the engine?

one guy on Facebook said he had this happen until a “rod bearing spun out and killed his engine”. Scares me but I don’t think that’s the issue.
 
I swapped mine out about 3-4 times till i found one that would work properly.

One thing I did do that i feel made a difference was use a mopar filter. It seems to like them better.
 
Hi, resurrecting this thread to see if anyone has found a fix for this common issue. Ive replaced the sending unit twice with no results and my mechanic is telling me it's " driver" on the gauge itself. He has a guy who takes apart the dash and replaces all the gauge drivers at a cost of around $300. Has anybody heard of this?
Thanks
 
Hi, resurrecting this thread to see if anyone has found a fix for this common issue. Ive replaced the sending unit twice with no results and my mechanic is telling me it's " driver" on the gauge itself. He has a guy who takes apart the dash and replaces all the gauge drivers at a cost of around $300. Has anybody heard of this?
Thanks
I have seen it done on ford's and chevy and others. But never thought about looking for my jeep.
 
Hi, resurrecting this thread to see if anyone has found a fix for this common issue. Ive replaced the sending unit twice with no results and my mechanic is telling me it's " driver" on the gauge itself. He has a guy who takes apart the dash and replaces all the gauge drivers at a cost of around $300. Has anybody heard of this?
Thanks
What year and engine? 90% of the time it's the sending unit, 10% wiring issue.
I've never seen the gauge itself go bad, but that's not to say it isn't possible.
 
Hi, resurrecting this thread to see if anyone has found a fix for this common issue. Ive replaced the sending unit twice with no results and my mechanic is telling me it's " driver" on the gauge itself. He has a guy who takes apart the dash and replaces all the gauge drivers at a cost of around $300. Has anybody heard of this?
Thanks
Where did you get the sensor? AutoZone and orielly ones always read zero at warm idle for me after a few months.