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Old 09-12-2010, 05:42 PM   #1
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Question 90 YJ Having High Oil Pressure Issues

I have a 90 YJ 4.0 i have done 2 engine flushes and changed the oil with no luck. The oil pressure gauge stays around 80 and goes even higher then it reads on the gauge. This happens driving and at idle. Any one have any ideas what the problem might be? Please Help I have no more ideas of what it might be.

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Old 09-12-2010, 06:23 PM   #2
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Start by changing out the sending unit

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Old 09-12-2010, 06:56 PM   #3
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X2 with Fweaky. All you need is a new sending unit. Even with a new one you may still get a higher than normal reading until the oil warms up.
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Old 09-12-2010, 10:39 PM   #4
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Will do thanx i will let you know if it works or not
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Old 09-13-2010, 12:13 AM   #5
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Go for the "Crown" sending unit if you can find it. The OEM AMC sending unit is the culprit with this issue.
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