Lost oil pressure

Sep 16, 2006 3 Replies
C

I have a 1994 Chevy truck with the 4.3L V-6.



Normally, the oil pressure runs about 55 PSI according to the stock oil pressure gauge. I notice the oil pressure dropped to about 40-45 PSI the other day and has run steady at that until last night.



Last night I noticed that when I would come to a stop, the oil pressure would drop to about 10 PSI or even less, but would go back up to about 20 PSI after about 1 or 2 seconds.



There are two things that come to my mind, something blocking the oil pick up screen or a pump going out. Any more ideas?


Thanks for any advice....


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W

I'll second the sending unit. Have had it happen on my own vehicle. If you have changed oil regularly I wouldn't suspect screen blocked on pick up. and oil pump failures are rare. You didn't say if you were getting any valve train noise when the gage reads low.

Whitelightning

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C

Thanks guys...

No noise that I have noticed. Haven't changed the oil recently either, but it is about time.

I found the sending unit at Pep Boys for $12. I think that I am going to buy one and try that as well as changing the oil while I am messing with the truck.

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