Engine 1989 Mustang GT oil pressure low

Wade_265

New Member
Oct 23, 2018
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Great Bend
I have an 89 mustang gt 5.0 HO. It’s always ran good up until about a week ago the oil pressure started reading low. It isn’t red lined. It’s throwing me for a loop. When I’m driving or in an idle it’s mostly at the bottom line but it tries to jump up constantly. I noticed today that I actually had oil being pushed out of the drain plugs themselves. I ordered a new oil pump and filter for it. Will this fix my problem?
 
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Wade_265

New Member
Oct 23, 2018
3
0
1
23
Great Bend
Very good chance it's just the sending unit. They are notorious for doing that. A mechanical gauge will really tell you what's going on though.
Would rather it be that than the pump. I’m getting a mechanical gauge tomorrow. Will update you on what happens. Thank you
 

marcelo

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Feb 25, 2018
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Quepos, Costa Rica, Central America
yes .stock gauge doestn work well.. I have a new HV oil pump and pressure was allways in the upper level of gauge but one day it dropped to lower half... bought a mechanical pressure gauge..and all fine ..+60 psi !! I also run a low pressure idiot light .. --20psi..
 
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