Re: Oil Pressure Gage indicates zero
Quote:
Originally Posted by Rocky Mountain Ranger
... bypassing the resistor should not be hard (with a multimeter).
|
97~2003 do not use a resistor in series with the gauge. The resistor bypass is necessary only for the earlier gauge clusters that have it.
Quote:
Originally Posted by Rocky Mountain Ranger
What oil pressure switch would be needed to replace the OE?
|
The correct SU for the 97-back OP gauge is the common Standard Products PS60 or Motorcraft SW1547B or equivalent.
Quote:
Originally Posted by Rocky Mountain Ranger
Would the gauge's electromagnet still function within the appropriate range (showing standard operating pressure about mid-scale of the dummy gauge and low pressure near the "L")?
|
For 97~2003 Rangers, the gauge itself is rewound to read about 40% of full scale at full battery voltage. Simply substituting a variable resistor sending unit would cause the needle to operate very low in the available scale and not be much more useful than the factory "idiot light with a needle".
Fortunately, it is possible to substitute the 95~96 OP gauge guts into a 97~2003 cluster. Make that change and use the PS60 or equivalent and the gauge will read actual pressure.
I have a 95 gauge in my 2003 cluster and a variable resistance sender an it works great. Clearance for the PS60 style sender is an issue with the 4.0 SOHC but it can be done. Not sure about the other engines but it should be possible.
__________________
2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals
BW4406 manual transfer case, Aussie Locker, Torsen L/S, 4.10's
Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos
Heated seats, Explorer EATC, Trip Computer and consoles
2003 XLT 2.3L M5OD-R1 reg cab, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid
|