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Oil pressure

Old Apr 5, 2019 | 08:24 PM
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Default Oil pressure

Just bought an 06 mega cab with the hemi and am having an oil pressure problem. With a mechanical gauge, what psi should I be seeing at idle once the engine has warmed up?
 
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Old Apr 5, 2019 | 08:37 PM
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It used to be, anything over 10 at idle, and then an additional 10 PSI/1000 rpm was considered 'acceptable'. On the newer trucks..... I don't know if that still holds true. What numbers are you seeing?
 
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Old Apr 6, 2019 | 12:33 AM
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Originally Posted by HeyYou
It used to be, anything over 10 at idle, and then an additional 10 PSI/1000 rpm was considered 'acceptable'. On the newer trucks..... I don't know if that still holds true. What numbers are you seeing?
Seeing 10-11 but it's low enough to set off the check gauge light and drop the oil gauge when I slow to a stop at a stoplight. And I did replace the sender switch already.
 
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Old Apr 6, 2019 | 08:23 AM
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If the gauge goes to zero at stop lights, you still have a sending unit problem.
 
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Old Apr 6, 2019 | 11:50 AM
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Originally Posted by HeyYou
If the gauge goes to zero at stop lights, you still have a sending unit problem.
Ran it a little longer this time with the mechanical gauge still on. It goes all the way to 6 psi at idle while in gear. Still a sender unit problem or is that too low?
 
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Old Apr 6, 2019 | 08:36 PM
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Nope. That's too low. You have bigger fish to fry than just a sending unit. Need to find out WHY your pressure is so low. Might be new motor time. (or, at least, New-to-you motor.)
 
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Old Apr 7, 2019 | 08:54 AM
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Min oil pressure PSI at curb idle is 4 psi. At 3000 rpm you should see 25 to 110 psi.
Are you getting noise from the engine; rods, lifters, something mechanical?
Have you changed your oil and oil filter?
 
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Old Apr 9, 2019 | 01:14 PM
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Originally Posted by jrsick
Min oil pressure PSI at curb idle is 4 psi. At 3000 rpm you should see 25 to 110 psi.
Are you getting noise from the engine; rods, lifters, something mechanical?
Have you changed your oil and oil filter?
No noise at all and runs great. Changed oil and filter right after I got it. (I've only had it 300-400 miles total)
 
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Old Apr 9, 2019 | 05:12 PM
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You get low oil press light at 10 psi?
 

Last edited by jrsick; Apr 9, 2019 at 05:14 PM.
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Old Apr 9, 2019 | 05:16 PM
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Originally Posted by jrsick
You get low oil press light at 10 psi?
No. It has to be just under 10
 
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