Engine Oil PressureSwitch+Needle

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; thus despite appearance the InstrumentCluster OilPressureNeedle is Off~On only & is not a variable Gage.



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