Low Oil Pressure
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Joined: May 2004
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Low Oil Pressure
Hello everyone
I'm having a low oil pressure problem on start-up after a cold night. It will take 2 to 3 minutes (eternity) for the oil pressure to come up to normal (on the in-dash gauge). When it does it jumps to the normal position and then is fine the rest of the day.
Wanted to see if anyone had a similar problem or a suggestion.
I'm not sure where to start; pump, sender unit or gauge.
Almost forgot 00' Explorer XLT with 5.0
Thanks
Ryan
I'm having a low oil pressure problem on start-up after a cold night. It will take 2 to 3 minutes (eternity) for the oil pressure to come up to normal (on the in-dash gauge). When it does it jumps to the normal position and then is fine the rest of the day.
Wanted to see if anyone had a similar problem or a suggestion.
I'm not sure where to start; pump, sender unit or gauge.
Almost forgot 00' Explorer XLT with 5.0
Thanks
Ryan
Elder User
Joined: Aug 2001
Posts: 942
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From: South Texas
Older models with 4.0 sending units were just switches that activated around 5 PSI. That makes the dash gauge was just a glorified Idiot light. I suspect your 5.0 is the same. Relpace the oil pressure sending unit and all should be well. If you want to test it out first, remove the lead from the sending unit, ground it to the block, and check the dash gauge for 1/2 scale reading (key on, engine off of course). If so, replace the sender.
Dialtone
Dialtone
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Joined: Dec 2004
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You can turn the "idiot gauge" into a real oil pressure gauge by removing the instrument pannel and locating a resistor that is tied to the oil gauge and soldering a jumper across the resistor. I believe it is a 20 ohm resistor. Then go to the local auto parts store and buying a oil sender for an older ford, say 1986, and replacing the sender on the engine with the one you just bought. Tell the parts man you need a sender for a gauge, not a light.
I have done this on a 89 F250 and work as advertized. I haven't done it to my 94 explorer yet, but it's on the "TO DO" list.
From what Iv'e heard, Ford was getting a lot of complaints about low and fluccuating oil pressure, so this was their fix.
I have done this on a 89 F250 and work as advertized. I haven't done it to my 94 explorer yet, but it's on the "TO DO" list.
From what Iv'e heard, Ford was getting a lot of complaints about low and fluccuating oil pressure, so this was their fix.
