Noticed last night the oil pressure gauge was indicating zero at RPM around 1500 to 2000 for a moment; then it jumped back up (fast enough to bounce the needle) to normal range. Checked oil level and ok.
What are the chances of a real pressure drop,
versus the gauge or sender being bad?

I suppose if it is cheap to replace the gauge and sender, I should do that for verification...

 

It's the oil pressure sender, they go bad all the time.

 

My stock gauge doesn't work ....

 

It's the oil pressure sender, they go bad all the time.

 

Yeah .... that's what I meant to say.

 

Mine jumps up at start to over 100 lbs, then goes down to about 20-30 lbs. after a 5 minute warmup. Then stays at 0 to 20 lbs all day long. I understand that cleaning the sender unit will improve accuracy a bunch.

 

Oil pressure gauge goes boing boing boing boing boing...

 

Don't get a new sender - Replace the Gauge with an aftermarket one - even a >$45 AutoMeter is MUCH better than the stock unit (goes for the stock Water Temp gauge too) - I have mounted my AutoMeter mechanical Boost & Oil Pressure gauges on the A pillar and am working on replacing the stock water temp & oil press gauges w/ aftermarket Oil Temp & Water Temp Gauges. (in the stock locations)

 

same here. Worse with fresh oil, or hot from lotsa idleing in traffic.

 

but with a new pressure sender goes hmmmmmmm....

 

but with a new pressure sender goes hmmmmmmm....