oil pressure drops to 10?????? - JeepForum.com

 
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post #1 of 11 Old 12-08-2004, 08:59 PM Thread Starter
arieljeep
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oil pressure drops to 10??????

i have an xj98 4.0. it seems like everytime i drive from brooklyn to manhattan,on the way to manhattan the oil pressure is fine, but on the way bak on stop lights the oil pressure drops to 10.why is that happening?


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post #2 of 11 Old 12-08-2004, 09:19 PM
Vertisce
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lots of stuff could be going wrong. Bad idle speed, blown head gasket...pray thats not the problem...among other things...could also be that there is too little or too much oil in the engine.
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post #3 of 11 Old 12-08-2004, 11:39 PM Thread Starter
arieljeep
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oil tevel is OK

oil level is OK
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post #4 of 11 Old 12-08-2004, 11:40 PM Thread Starter
arieljeep
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oil tevel is OK.

oil level is OK.
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post #5 of 11 Old 12-08-2004, 11:40 PM
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if your relying on a stock gauge and there is no other evident that there is a problem I would get a good gauge and see what the pressure is really at. Stock gauge usually aren't that accurate. Bad oil pressure is a major problem, that why I have a new motor My oil pump went bad at 90K, My wife heard it knocking on her way home, so I took it out for a test drive and 100yards later the motor seized up.

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post #6 of 11 Old 12-09-2004, 12:00 AM
Kamaaina
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On a hot day my 98XJ oil pressure will sometimes drop down to 10psi. I have 86K miles and use 10w-30. Like it was said earlier if your using the gauge on the dash it's not at all accurate. I've read other posts that also say the same thing.....it's normal.
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post #7 of 11 Old 12-09-2004, 05:37 AM
blackbelt
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The stock guage is almost useless. Mine looks like it is working normally, but if i punch the gas, it DROPS! . Get a good guage and check it out for your peace of mind.

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post #8 of 11 Old 12-09-2004, 06:59 AM
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Quote:
Originally Posted by Kamaaina
On a hot day my 98XJ oil pressure will sometimes drop down to 10psi. I have 86K miles and use 10w-30. Like it was said earlier if your using the gauge on the dash it's not at all accurate. I've read other posts that also say the same thing.....it's normal.
I get the same thing in my '98 while wheelin'...considering my old '90 rarely even showed any pressure, 10 psi is great


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post #9 of 11 Old 12-09-2004, 07:06 AM
XJ99
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It seems like the older the oil gets, the worse the oil pressure becomes. Mine will drop below the 20 line on hot summer days...

When we do right, no one remembers. When we do wrong, no one forgets.
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post #10 of 11 Old 12-09-2004, 08:44 AM
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The last time mine did that it turned out to be a gunked up oil filter. Changed out the filter, problem went away.

HTH,

Mark
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post #11 of 11 Old 12-09-2004, 08:10 PM Thread Starter
arieljeep
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i use K&N

I use K&N and the oil is 10w-40 and i had RESTORE
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