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DriveTrain Differentials
This ExST has factory 4.10Ratio Diffs: Rear is LimitedSlip=TractionLok, Fore is OpenSlip Hubless=LiveAxle. An Axle Inspection+GearOilChange should be done every 33kMiles\4~5Years; Additive+Lube spec below. Thanks go to the -
DriveTrain Transmission
The 5r55e.4WD& 5r55e.2WD subversions of this Transmission will NOT interchange between 2WD& 4WD Vehicles as the 2WD\4WD TailShaftExtensions are different+unswappable. 1997~1998 5r55e subversions have an OverDriveSpeed\ODSSensor but it is -
Engine Oil Pressurized TimingTensioners
As of this 2020 writing, I'm just dumb lucky, not having had any TimingChain component failure with this 20yr old V6-4.0L~SOHC engine; only issue noticed is momentary rattling during very cold -
Engine Coolant ThermoStat
In early 2019& 19+ years, the FactoryOE ThermoStat Housing on my 2001 Ford ExplorerSportTrac started to leak per the pics below; at first just an irritation, this leak steadily grew much worse. Under the Throttle -
Engine Oil
Oil+Filter changes are an often neglected, greasy, lowly task, however they preserve& extend engine life. For any vehicle under warranty, it's best to use& record OEM spec Fluids+Filters+ServiceIntervals, so to not -
Engine Ignition Plugs+Wires+CoilPack
The ElectronicDistributorlessIgnitionSystem-6cylinder\EDIS-6 factory stock in this 2001 V6~4.0L~SOHC, became a Ford standard in the late 1980s; it was an innovative though relatively simple SolidState design which eliminated legacy MechanicalDistributors -
Engine Exhaust OxygenSensors
This 2001 Ford ExplorerSportTrac& V6~4.0L~SOHC engine has 3 OxygenSensors; they are also known as HEGO\HeatedExhaustGasOxygen, H02\HeatedOxygen, Lambda\NarrowBand Sensors; as located below. Sensor11+Sensor21, pic below, are between Rght+LeftManifolds -
Electrical DashLamps
Read& watch the ForumThreads& Videos below for details on removing the center Air+Radio panel, then left InstrumentCluster panel, to allow replacing Lamps. Using LightEmittingDiods\LEDs to replace original IncandescentBulbs is NOT recommended; the LEDs -
2001 Ford Explorer Sport Trac Wiki
Year Make Model= 2001 Ford ExplorerSportTrac Gen1 Job2 FinalAssembly 2000.09??@USKy.Louisville Note this 2001 ExST has same Frame+DriveTrain as a 2001 RangerExtendedCab with V6~4.0L~SOHC+ 5r55e Trans+ 1354 TCase. Engine -
Engine Coolant Radiator+Cap
In 2020Jun, while replacing TimingTensioners, the ThermoStatHousing had to be removed for access to left Tensioner; while draining Coolant, discovered a 6" split& leak in the old 2RowPlasticTankedRadiators right tank& drain. Described here is the -
Engine Oil Pan+Screen
OIL PAN* Good News, Found Only Loose Paint* Why Is Factory Pan Painted Inside? OIL PAN* Bad News, If Broken Guides In Pan* Good News, This Is NOT My Oil Pan -
Engine AirIntake Filter
The stock AirIntake FilterHousing is in the RightFore corner of the engine compartment. Shown& listed below are several PanelStyle PaperElement Filters, Width* Length* Height noted, that fit in this housing. In 2020May, I began experimenting -
Towing Accessories
This 2001 ExplorerSportTrac as fitted at the factory, had only a HitchBall mount on the stock RearBumper, rated 3500\350Lbs Trailer\Tongue. Considering that a lighter utility Trailer satisfies my occasional towing needs,& the high -
Engine Coolant
For this 2001 Job2 Ford V6~4.0L~SOHC, the Coolant system capacity is approximately 14.00Qts\13.25Ltr. Coolant needs to be flushed+renewed& the ThermoStat& RadiatorCap replaced every 4~5Yrs\33kMiles. Inspect other -
Vehicle Specs+Dimensions+Guides
The links below are to basic Specs+ Dimensions+ Guides for this specific 2001 Ford Explorer Sport Trac: The Ford V6~4.0L~SOHC engine design evolved from the V6~1.8L~OHV first designed+produced -
DriveTrain TransferCase
This TransferCase actually has 4 positions, 2WHi~4WHi~Neut~4WLo with Neut unmarked& normally not needed\selectable; a kit can be installed for selecting Neut, allowing "Flat Towing" behind a MotorHome. Change TCaseFluid\TCF at -
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 -
Engine Coolant Fan+Clutch+Pump
Pump Old vs New Pump Gasket Prep -
Engine AirIntake IdleAutoControlValve
2001~2005 ModelYear ExST V6~4.0L~SOHC engines were equipped with an IdleAutoControlValve\IACV shown below; it's in easy view+reach behind the ThrottleBody on the ManifoldThroat. The PCM computer controls StartingRPM\Flare -
Mechanical Suspension
Thanks go to the brave souls who've preceded me in similar adventures& freely shared their experience. -
Engine Coolant HeaterValve
It seems that the engineered DesignLifeTime for this vehicle, assembled in 2000, was\is about 18 years; starting in 2019, during every Coolant system maintenance task (ThermoStat Valve, Hoses, Flush+Fill,...) yet another factory plastic -
Engine Belt Serpentine+Tensioner+Idler
Belt.Serpentine Belt.IdlerPulley Belt.Tensioner Thanks go to the brave souls who've preceded me in similar adventures& freely shared their experience: -
Engine AirIntake ExhaustGasRecirc
This 2001 Ford V6~4.0L~SOHC is factory fitted with the ExhaustGasRecirc\EGR system pictured below. Thanks go to the brave souls who've preceded me in similar adventures& freely shared their experience: -
Engine AirIntake PositiveCaseVent
Thanks go to the brave souls who've preceded me in similar adventures& freely shared their experience: -
Electrical SteeringColumn
Thanks go to the brave souls who've preceded me in similar adventures& freely shared their experience:
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