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Old 08-11-2013, 11:21 PM   #1
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Oil pressure

My oil pressure is all over the place new oil pump new pressure switch new oil filter new oil. At ideal it about 20 running down the road it 60 psi. I even put the old pressure switch back on and same thing. Any ideas on what it could be I was told its time for a rebuild. That the bearings are getting to much play but I would think you would hear that like a rod knocking

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Old 08-12-2013, 12:12 AM   #2
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Try taking the gauge cluster down and clean every contact really good. Also make sure your grounds are good. Grounds are your best/worst enemy!

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Old 08-12-2013, 03:21 AM   #3
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Running close to mine . . . Have a 92 2.5L, at initial start runs at 60, will drop some to around 50 (min.) at running temp., idle at running temp., just around 30, give or take.
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Old 08-13-2013, 12:48 AM   #4
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I read something on the great net that says as long as its above 13 at ideal you are good to go but seems low to me. It's still runs good. If it blow it will just give me a reason to buy a new one
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Old 08-13-2013, 06:22 AM   #5
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I read something on the great net that says as long as its above 13 at ideal you are good to go but seems low to me. It's still runs good. If it blow it will just give me a reason to buy a new one
Any pressure is a positive thing. LOL!
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Old 08-13-2013, 11:45 AM   #6
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Yes it is lmfao
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Old 08-13-2013, 02:41 PM   #7
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I have 155'000+ on my 89 2.5 and oil pressure at idle (warm) 30, 4th gear @ 45-50mph around 60.
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Old 08-15-2013, 12:30 AM   #8
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I'm just going to let it be
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Old 08-15-2013, 07:24 AM   #9
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My oil pressure is all over the place new oil pump new pressure switch new oil filter new oil. At ideal it about 20 running down the road it 60 psi. I even put the old pressure switch back on and same thing. Any ideas on what it could be I was told its time for a rebuild. That the bearings are getting to much play but I would think you would hear that like a rod knocking
that is not unusual..warmed up engine with 20 pounds at idle is okay and then for it to jump to 60 with the rpm's up is normal too..it just indicates that your engine does have some wear but it may still have a lot of miles in it
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Old 08-15-2013, 11:38 PM   #10
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Cool thank for the info
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Old 08-16-2013, 07:22 AM   #11
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my oil pressure stays steady at 30 pounds, sometimes i'll push 40 pounds but other than that im pretty much dead on 30 UNLESS I turn the heat on during the winter. Any thoughts on this?
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Old 08-16-2013, 07:26 AM   #12
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my oil pressure stays steady at 30 pounds, sometimes i'll push 40 pounds but other than that im pretty much dead on 30 UNLESS I turn the heat on during the winter. Any thoughts on this?
you may have a sending unit/gauge problem...normally oil pressure will fluctuate more than that with temp and rpm's
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Old 08-17-2013, 12:42 AM   #13
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Well oil pressure is now down to 20 at highway speed
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Old 08-17-2013, 06:37 AM   #14
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if it is time for the oil and filter to be changed then do that..I always use 10w-30..if it is not due a change then at least make sure the oil level is where it should be
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Old 08-17-2013, 01:21 PM   #15
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Full of oil and did a change about 3 days ago
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Old 08-17-2013, 01:56 PM   #16
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If it still runs well as you originally stated, why not just invest a couple of bucks in a new sending unit? Easy fix and I think you may be pleasantly surprised.
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Old 08-17-2013, 02:47 PM   #17
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That's my next step. Just looking at grounds and wiring to see if I have a problem with any of that. Cleaned the cluster out as well
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Old 08-22-2013, 09:00 PM   #18
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Ok no change. I may try using 10w40.

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