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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

3.0L oil pressue

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Old Feb 5, 2008 | 01:20 PM
  #1  
88yotadad's Avatar
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From: Vancouver Island , Canada
3.0L oil pressue

How much oil pressure should a 3.0L have. I just got the oil gauge installed and at fast idle the gauge was reading 90lbs. That to me sounds to high. I did not have time to get the motor warmed-up so no idea if the pressure would drop once the engine warms-up.
Roger
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Old Feb 5, 2008 | 01:52 PM
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i would think that figure would be a bit high, however, this is only a guess.
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Old Feb 5, 2008 | 03:03 PM
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From: Vancouver, BC
High oil pressure, especially with cold oil, is perfectly normal. It basically means you can run a lighter oil. ie, 5w30 instead of 10w30. High oil pressure is a good thing.

If your oil pressure was low, that would be a problem, indicating damaged/worn bearings or oil pump. That would be a bad thing.
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Old Feb 5, 2008 | 06:07 PM
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From: NW Ark on wooded ten acres...Ozarks at large!
Hey, Roger. You're back!

If the motor's cold....especially if it's cold where you live....that is normal. If it's higher than spec when warmed, that would be a concern.

Is the motor knocking or anything?

Oh, here's the specs....but, of course, this is for operating temps.
http://personal.utulsa.edu/~nathan-b...16oilpress.pdf

Last edited by thook; Feb 5, 2008 at 06:09 PM.
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Old Feb 6, 2008 | 12:09 AM
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Yes it making noises but I'm thinking that it is the water pump. We have a small amount of fluid dripping down the block on the drivers side. I can not see from where so I'm assuming water pump.
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Old Feb 6, 2008 | 09:24 AM
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From: NW Ark on wooded ten acres...Ozarks at large!
Well, it may be messy, but one way to locate the leak would be to spray aerosol foot powder around wherever a leak is possible. It's easy to rinse off, though.

Does the fan clutch have any play in it?
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Old Feb 8, 2008 | 06:52 AM
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I thinking water pump or timing belt idler is my noise problem. I listened with a stethiscope(spelling). The next project is to fix this.
Roger
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Old Feb 8, 2008 | 07:45 AM
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Does it sound kind of like a scraping sound?
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