Mechanics

OIL PRESSURE, GAUGE OR PUMP?

Ford Mustang

Hi, : )
I have a 95 mustang GT, engine is a 5.0 and has about 92,000 miles on it. A couple of days ago I had the alternator replaced. When I started it up to show the mechanic that the alternator light was on (came on within a mile or two of when I stopped driving it) I did notice that the oil pressure gauge wasnt very high but I was told that was due to the alternator being bad. I shut the car off then and did not drive it after that until the alternator was replaced. When I picked up the car from the shop, the oil light was on so I put oil in it but the oil pressure gauge was showing low. After a few minutes, it came up but was not quite as high as it always had been. Since then it has fluctuated and tonight there was no oil pressure for about 5 minutes, after which time it jumped up to about the half way mark. In the past it has always been much higher than half way. Since then there has been pressure, but it keeps fluctuating. I do not know if it is the gauge (have wondered if they could have bumped something like a sensor or wire to the gauge when doing the alternator but it was low the last time it was started before that, but never before then, and had always held steady at the " A" in the word normal) and I do not know if it is safe to drive it back and forth to work (about 15 miles round trip) for a few days until I can get this problem checked out. I did have the oil send unit replaced about 4,000 miles ago as I told that was where an oil leak was coming from. Can you help me with this problem by telling me what I can possibly expect if I continue to drive it and if it is safe to do so and what you suspect the problem to be? Time is of the essence here as I do not want to do any damage to my " baby" but do not have other transportation to work so I do not know what to do. : Cry:
I would really appreciate any help you could give me
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Stang0777
December 9, 2006.



One way to tell would be to run an oil pressure test with a mechanical oil pressure gauge. You may be able to rent one from your local auto parts store. If it shows good pressure, I'd say the oil sending unit is faulty.

Tiny
Catch_15
Dec 9, 2006.
[quote=" catch_15" ]One way to tell would be to run an oil pressure test with a mechanical oil pressure gauge. You may be able to rent one from your local auto parts store. If it shows good pressure, I'd say the oil sending unit is faulty.[/Quote]

Thank you very much, I will do that. I really appreciate your help. : )
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Tiny
Stang0777
Dec 10, 2006.

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