Oil Pressure switch #D4AZ9278A

[Ranger Tony]

I cannot find a replacement for my leaking sending unit in my 91' Ranger with a 4.0. Does anyone know of a replacement sending unit part number that will work with an OE dash gauge?

 

[2011Supercab]

All I can find says your part number is for a Light, and looks like this

The one for a gauge looks like this and should have this part number E6SZ9278A or F5SF9278AA

 

[RonD]

Oil pressure switch is the same on all Rangers 1989 and up, just the connector changed

1991 should have a single stud sticking out that you slide the one wire on to

Cheapest is PS461, $15
Cheapest Motorcraft is SW2220, $25

 

[ericbphoto]

If I recall, the OEM part is just a pressure switch. When pressure rises high enough, the switch has closes and send the needle in the gauge cluster to a position to read "normal".

And while I was typing, RonD gave you the info.

 

[alwaysFlOoReD]

I was shocked at the prices up here. I'm definitely scrounging those parts off before sending stuff to the wrecker.

 

[ericbphoto]

That ps461 is $5.11 on RockAuto and looks identical to what was originally on my 93 and functions as I described above. After about 25 years, it will start leaking again. But that's probably acceptable for a $5 part.

 

[alwaysFlOoReD]

That ps461 is $5.11 on RockAuto and looks identical to what was originally on my 93 and functions as I described above. After about 25 years, it will start leaking again. But that's probably acceptable for a $5 part.

I searched on rock auto and it comes up as a "wholesaler close-out" for C$6.90. Probably worth buying one or 2 before they're gone forever...