Changes: Engine Oil PressureSwitch+Needle

Revision as of 08:00, 3 September 2021

1997~2012 Ford V6~4.0L~SOHC Engines have a FactoryEquipped OilPressureSwitch on the FrontLeftSide;
note, this is only a simple Switch which toggles Off~On at 6~8psi; it is not a fully variable PressureSensor;
& despite appearances, the InstrumentCluster OilPressureNeedle is Off~On only & is not a true variable Gage.

This V6~4.0L~SOHC has an OilPressureSwitch only, not a true VariableSensor; it toggles Off~On at 6~8psi;
despite appearance the InstrumentCluster OilPressureNeedle is Off~On only; it is not a true VariableGage.

EngineColdStart Procedure

If V6~4.0L~SOHC Engine hasn't run for 12 hours or longer, this EngineColdStart routine is recommended
for general PreLub of the Engine critical components & specificly to PrePressurize the TimingTensioners.

Turn Key To RUN Not START, Let InstrumentCluster Lamp+BuzzerTest Complete
Push+Hold GasPedal To Floor, InstrumentCluster OilPressureNeedle Should Be At Zero
Turn Key To START, Let Engine CRANK Without Starting Until OilPressureNeedle Moves Or ~10secs
Let Key SpringReturn To RUN, Engine CRANK Should Stop
Release GasPedal, Turn Key To START; When Engine STARTS, Let Key SpringReturn To RUN
OilPressureNeedle Should Quickly Rise+Hold At MidGage Position

Links To Related Info

Thanks go to the brave souls who've preceded me in similar adventures & freely shared their experience:

http://youtu.be/Q7Vj85Ioj48?t=1

http://youtu.be/3_aEd-AaNOM?t=23

http://youtu.be/p4ZlOwzbOWM?t=1

http://youtu.be/alHgRzCSJKI?t=4

http://web.archive.org/web/20200425104211/http://autodiyonline.com/ford-diys/ford-explorer-diys/ford-explorer-1995-2003-sport-oil-pressure-sensor-diy

https://www.explorerforum.com/forums/threads/pre-oiler-to-save-timing-chain-guides.377315 PreOiler

https://www.explorerforum.com/forums/threads/dont-buy-this-pre-oiler.484187/#post-3808999and PreOiler

https://www.explorerforum.com/forums/threads/2001-ford-explorer-sporttrac-oilpressurized-timing-tensioners-replaced.488855/page-2 PreOiler Piping+Wiring

https://www.explorerforum.com/forums/threads/timing-chain-rattle-resolution-process-sohc-v6.278100/page-3#post-3508792

@@ Line 2: / Line 2: @@
 ~2012 Ford V6~4.0L~SOHC Engines have a FactoryEquipped OilPressureSwitch on the FrontLeftSide;<br>
 note, this is only a simple Switch which toggles Off~On at 6~8psi; it is not a fully variable PressureSensor;<br>
-& despite appearance the InstrumentCluster OilPressureNeedle is Off~On only; it is not a variable Gage.<br>
+& despite appearances, the InstrumentCluster OilPressureNeedle is Off~On only & is not a true variable Gage.<br>
 This V6~4.0L~SOHC has an OilPressureSwitch only, not a true VariableSensor; it toggles Off~On at 6~8psi;<br>