Oil Pressure

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Jan 22, 2009 | 10:14 PM

#16

Metmknice

CF Veteran

Joined: Oct 2008

Posts: 2,127

Likes: 2

From: Hell, CA

Year: 1989

Model: Cherokee

Engine: 4.0L I6

Quote:

Originally Posted by heaton2323

My pressure is normally just south of 20 PSI, highway or idle.

From the sounds of what everyone else is running, this seems low.

Do I need to worry?

I would get a mechanical gauge and check the actual psi. Your sending unit might not be working properly

Jan 22, 2009 | 10:23 PM

#17

Tkitt21

Junior Member

Joined: Jan 2009

Posts: 73

Likes: 0

From: Greenwood Arkansas

Year: 1999

Model: Cherokee

Engine: 4.0

Mine went out on me when i would drive it would show bout 40 but as soon as I stop it would drop to ZERO and warning gauge would come on.So I finally got around to changing it the other day and all is good now.Really easy fix for $35...Wasnt hurting anything just got tired of the warning gauge coming on

Jan 23, 2009 | 09:29 AM

#18

BowtieGuy3

CF Veteran

Joined: Mar 2008

Posts: 2,088

Likes: 2

From: South Side Chicago

Year: 1992, 2- 1998 (All 3, 4 Doors)

Model: Cherokee

Engine: 4.0L in all

As long as your engine is putting out 5psi/1000RPM, it's fine. That's the MINIMUM oil pressure required to prevent the engine 86-ing itself. I hover between 30 and 50 right after an oil change, a little less with more fluctuation once the new lube is worn in.