OIL PRESSURE question

[jshawag12]

when i start my truck up pressure gauge goes up to 60, then when it gets warmed up and i'm driving it hovers at 40 but when i'm idling it drops down to around 20-25....

what could be causing this? is it a faulty gauge or something else?

anyone had this problem?

'97 5.7 178k miles

TIA!

 

[Butch]

both motor's I've had in my truck have done this, perfectly normal for a vortech 5.7 as long as it never gets below 10

 

[MIHELA]

Oil is thick when it's cold, so you get high pressure on startup. The oil pump is driven by the cam, so it's creating the least pressure at idle. Perfectly normal.

 

[6chevy9]

what he said ^

 

[DRAGGIN95]

Sounds normal to me, the old rule of thumb I've always heard is a minimum 10lbs of oil pressure per every 1,000 rpm's.

 

[98chevy4x4]

Mine does this also but so what yall are saying is it shoudnt be nothing to worry bout but another thing is mine didnt used to do this it used to always stay near 60

 

[94chevy4x4]

My truck does this also.. but mine on cruise control around 75 80 it jumps from 40 - 80 lbs it has done that since i got the truck I love my truck

 

[1990GMCSIERRA]

ur fine,,its normal

 

[FastOrange]

perfectly normal, those numbers are the same i get with my "souped up" 350.

 

[1990GMCSIERRA]

same here