Oil Pressure

[Brian_D]

So iv noticed that my oil pressure runs around 30-40 during idle, but when im on the gas its maxed out.

Engine going bad? Bad gauge? Normal?

My s10 ran around 40 all the time thats why im wondering.

Thanks!

 

[natemc]

unplug the sender and check the guage. I believe unplugged it pegs out. Your sender is probably bad. They're pretty cheap so I would just replace it. If you have a manual guage laying around that can be installed quickly you could do that for piece of mind to test. Myself though, I'd just check the sender.

 

[Brian_D]

unplug the sender and check the guage. I believe unplugged it pegs out. Your sender is probably bad. They're pretty cheap so I would just replace it. If you have a manual guage laying around that can be installed quickly you could do that for piece of mind to test. Myself though, I'd just check the sender.

cool, i will check that out first. the cheaper the better! heh

 

[Deuling]

Thats what my motor does. Runs 40 at idle and 60 while driving. Has done it since it was brand new last summer so i dont think its bad. Mine does it with both the stock unit and a mechanical.

 

[Brian_D]

Thats what my motor does. Runs 40 at idle and 60 while driving. Has done it since it was brand new last summer so i dont think its bad. Mine does it with both the stock unit and a mechanical.

That eases me mind some, hehe. my father in law told me it was normal, but since my s10 ran at 40-50 all the time it concerned me.

 

[Deuling]

That eases me mind some, hehe. my father in law told me it was normal, but since my s10 ran at 40-50 all the time it concerned me.

I bet its the newer gauges cuz i only see it happen in old or mechanical gauges.

 

[Stomis]

Oil pressure should be 20-40psi at idle depending on engine wear. The more worn the engine the less you'll have at idle. The rule of thumb I was taught was that the pressure should roughly increase 8-12psi for every 1000rpms depending on load. Of course engine temp is going to affect what you're seeing and every engine is different.

 

[4xcrazy]

The gauge on my '89 always read high when I first got it, 50-60, most of the time, I swapped out the sender with a new one and the reading dropped to within a more normal range of around 40-50 and fluctuates alittle more depending on engine speed.

 

[Brian_D]

thanks for the replies guys, @stomis, the temp runs good, always at the normal range, never goes above.