En9ineer

I’ve followed the discussion about replacing the oil pressure sensor on my 1994 F150 XLT 5.0.
The gauge on the dash stopped working suddenly a few days ago and after reading some of the comments I was sure it must be the pressure sensor so I replaced it. Sadly when turned the key the gage initially read good but as soon as the engine was running the indicator moved to the left showing no pressure.
Does anyone have an idea. The truck has 105k miles and has always been dependable.

David Hineline

Well replace the electronic oil pressure switch with an actual pressure gauge and see if it actually has pressure.

raski

These gauges are just "idiot" gauges that deflect when pressure is above 6-7 psi. If your pressure is low, the engine will be very noisy. You replaced the switch (it's not a sensor) so that leaves the dash gauge itself or the wiring for it. I would abandon it and install an actual electrical pressure gauge and matching sending unit.

Lariat24$

I have the same issues, soon I'll install a better mechanical gauge like "Auto Meter".

1989 F-150 5.0 5 speed, 3:55's 2"lift, with 31's tires cold air induction, throttle spacer straight piped, blistien shocks n springs

manicmechanic007

First step is to ground the sending unit wire and see if the gauge pegs
Once you know if you need a new gauge or what is wrong with your present indicating system, you can make a decent decision on whether it is best to go with a mechanical gauge or not
All my Fords with electric gauges work well enough for me
I do put mechanical gauges (capillary tube type) on all my hotrods