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post #1 of 8 (permalink) Old 02-27-11, 05:42 PM Thread Starter
grg
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90 f_250 5.8 low oil pressure

Just bought a 90 250 with a 5.8 liter . once it warms up the oil pressure drops to nothing at idle rev it up and the pressure jumps back up, let the revs drop and the pressure drops off again. have changed the pressure sensor still have the same problem.

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post #2 of 8 (permalink) Old 02-27-11, 06:22 PM
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Re: 90 f_250 5.8 low oil pressure

i would get the presure checked it could be an oil pump or worn engine bearings


Ian
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post #3 of 8 (permalink) Old 02-27-11, 06:56 PM
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Re: 90 f_250 5.8 low oil pressure

Put in a temporary mechanical gauge and see what readings you get.
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post #4 of 8 (permalink) Old 02-27-11, 07:20 PM
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Re: 90 f_250 5.8 low oil pressure

I'm betting on worn bearings but as Fonz says, good idea to check it with a different gauge.
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post #5 of 8 (permalink) Old 03-01-11, 08:18 PM Thread Starter
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Re: 90 f_250 5.8 low oil pressure

Thanks Guys. Gave up on the 5.8 dropping a 5 into her now
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post #6 of 8 (permalink) Old 03-01-11, 08:21 PM
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Re: 90 f_250 5.8 low oil pressure

Let us know how it goes grg
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post #7 of 8 (permalink) Old 03-08-11, 06:59 PM Thread Starter
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Re: 90 f_250 5.8 low oil pressure

So got the 302 in there. Donor motor came out of a 87 kept all the emission controls and wiring from the 5.8, fired right up purring nice
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post #8 of 8 (permalink) Old 03-08-11, 07:40 PM
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Re: 90 f_250 5.8 low oil pressure

Good Deal
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