Erratic oil pressure

[Avalanche]

Has anyone had this issue?
It's a 440, but the oil pressure is about 60psi. Only weird thing is the pressure gauge bounces back and fourth at a high rate. Trying to find out what can cause this.
Thanks

 

[pschlosser]

electrical?

 

[Avalanche]

electrical?

Don't think it's electrical. Have a mechanical gauge inside the engine bay that's bouncing around.

 

[Challenger RTA]

Only thing comes to mind. It's not getting constant pressure. Air bubbles. Purge gauge line might help.

A high-rate bouncing oil pressure gauge typically indicates one of three critical issues: system pulsation from a failing dampener or relief valve oscillation, air contamination (aeration) due to low oil levels or suction-side leaks. Low oil level in oil pan.

 

[Xcudame]

One of the things I love about Mopar big blocks is that the pump is bolted in the outside. And it sounds like you're going to appreciate that too when you swap in new one!

 

[Chryco Psycho]

Could be opening the bypass valve repeatedly

 

[540HemiCuda]

A little more info would help, like pressure at idle, max pressure, hot pressure, cold pressure. And when does it do it? All the time? At idle? At road speed? Hot? cold?