4x4 vent and oil preasure

[warrensmanche]

first off what is a normal oil preasure reding.mine has mobil 1 10w 40 in it and runs about 40 cold at idle and 15 warm at idle.usually runs at 2200 rpm and at 25- 30 psi.also when i disinguage my 4x4 the light stays on and the axle is still inguages till i drive it a few blocks.i just put a new switch and vent in it.is this normal?

[Eagle]

Factory spec for oil pressure (with a warm engine) is 13 psi minimum at idle, and 37 to 75 psi above 1600 RPM. In general, most decent Jeep engines seem to idle between 20 and 30 psi and run 45 to 55 psi at high way speed (around 2000 RPM). Yours sounds a bit on the low side, but not fatal.

 

With the front axle disconnect, it's not unusual for there to be some delay unlocking, but several blocks is a bit extreme. I have found that, if traffic permits, unlocking is more reliable if I can stop and back up for a few feet, then go forward again.

[warrensmanche]

thanks.i still think theres something up with the 4x4 though.maby the fork is getting hung up or something.i feel like it has to be in the axle unless that is all jeep do this.

[kyleag89]

Why not just lock the axle over all the time and not worry about it? http://www.comancheclub.com/forums/viewtopic.php?f=9&t=18415

[warrensmanche]

not a bad idea.the only reason i didnt do that is because fuel mileage which probably isnt noticable and my 4x4 light.well actually the 4x4 light would still work if i leave the vacume lines.maby i will do that because the lines froze up on me a couple times this winter and i didnt have 4x4.its like haveing a cheap posi lock without pulling a cable.

[Eagle]

Yeah, if it's giving you problems, just lock it. As you said, if you keep vacuum to the switch, the 4x4 light will still operate.