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Ford · Known Issues

2000 Ford Explorer Problems: 9 Known Issues

2000 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2000 Ford Explorer has 9 documented known issues, with 4 rated critical. The most serious are Firestone/Wilderness AT Tire Tread Separation Causing Blowouts and Rollovers (Recall EA00-023) ($0-$900 repair), 5R55E Automatic Transmission Reverse Loss and Forward Clutch Slipping ($900-$3,000 repair), Cruise Control Deactivation Switch Brake Fluid Leak and Underhood Fire Risk ($0-$250 repair) and Timing Chain Cassette and Guide Failure on 4.0L SOHC V6 ($1,800-$4,500 repair). Across all issues with published estimates, repair costs range from $80 to $4,500. DIY maintenance guides at au7o.io.

In This Article

  • Explorer Safety/Recalls2
  • Explorer Engine3
  • Explorer Transmission1
  • Explorer Fuel System1
  • Explorer Emissions1
  • Explorer Electrical1
  • Recalls7
  • FAQ
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In This Article

  • Safety/Recalls2
  • Engine3
  • Transmission1
  • Fuel System1
Emissions
1
  • Electrical1
  • Recalls7
  • FAQ
  • All 9 Known Issues

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    On the 1995-2001 Ford Explorer, the 1995-2001 Explorer was factory-fitted with P235/75R15 Firestone Radial ATX, ATX II and Wilderness AT tires that suffered tread-belt separation, especially in hot climates and when underinflated to Ford's low placard pressure. A rear tread separation at highway speed frequently sent the tall, relatively narrow-track Explorer into a rollover. NHTSA linked the failures to hundreds of deaths and over 700 injuries, triggering the August 2000 recall of 6.5 million tires and the 2000 TREAD Act. Owners of surviving high-mileage examples still search this because any period-original or old-stock Firestone AT tire is suspect.

    This issue also affects: Ford Explorer Sport Trac

    Common Symptoms

    • Vibration or thumping at highway speed
    • Visible tread bulge or lump in the sidewall/tread
    • Sudden loud blowout and pull to one side
    • Tread pieces separating from the tire
    • Loss of vehicle control / rollover tendency after a rear tire failure

    How to Fix

    Replace any remaining original-era Firestone ATX/ATX II/Wilderness AT tires immediately regardless of tread depth (age/dry-rot alone condemns them). Fit a modern LT/P-metric all-season from a current manufacturer and, critically, inflate to a safe modern pressure (~30-35 psi) rather than Ford's original low 26 psi placard figure, which contributed to heat build-up. Inspect for uneven wear indicating worn ball joints or alignment that accelerate belt separation.

    Typical repair cost:$0 - $900

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 2000-2010 Ford Explorer, many Ford vehicles of this era, including the Explorer, were subject to recalls for the speed control deactivation switch mounted on the brake master cylinder. The switch can leak brake fluid internally, overheat, and in some cases cause an underhood fire even when the vehicle is parked and the ignition is off. This is a well-documented safety defect with multiple recalls and widespread owner awareness.

    Common Symptoms

    • brake fluid leak at master cylinder switch
    • cruise control inoperative
    • burning smell from engine bay
    • smoke under hood
    • melted electrical connector
    • battery drain

    How to Fix

    Owners should verify recall completion by VIN and inspect the master cylinder area for signs of fluid seepage at the cruise control switch connector. The recall repair generally installs an updated fused jumper harness and/or replaces the switch. If there is any evidence of melting, smoke, or fluid contamination in the connector, the vehicle should not be parked indoors until repaired.

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    Typical repair cost:$0 - $250

    Research This Issue

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    Community Reported
    High Confidence

    On the 2000-2010 Ford Explorer 4.0L SOHC V6, the 4.0L SOHC Cologne V6 is notorious for timing chain guide and cassette failures, especially the rear cassette that is difficult to access with the engine installed. Plastic guide material breaks down over time, causing startup rattle, persistent chain noise, cam timing errors, and eventually severe engine damage if the chain jumps timing. This is one of the best-known Explorer engine problems of the era and is documented across owner forums, repair databases, and NHTSA complaints.

    This issue also affects: Ford Aerostar, Ford Bronco, Ford Bronco Sport

    Common Symptoms

    • rattle at cold start
    • timing chain noise from front or rear of engine
    • check engine light
    • rough running
    • misfire
    • loss of power
    • no-start if timing jumps

    How to Fix

    Diagnosis includes listening for chain rattle at cold start and idle, checking cam/crank correlation codes, and inspecting timing components if noise is present. Proper repair requires replacing the affected timing cassettes, guides, tensioners, and often chains; because rear timing components are at the back of the engine, labor is extensive and many shops remove the engine. Replacing only external tensioners may reduce noise temporarily but does not fix broken guides.

    Typical repair cost:$1,800 - $4,500

    Research This Issue

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    Community Reported
    High Confidence

    On the 1997-2003 Ford Explorer 4.0L SOHC V6, the 4.0L SOHC V6 is notorious for lean-bank codes P0171 and P0174 caused by unmetered air leaks rather than a dirty MAF. The plastic upper intake manifold and its rubber O-ring gaskets, plus the heat-degraded PCV elbow/hose near the throttle body, crack and collapse under vacuum, letting in unmetered air. The result is both banks reading lean, rough/erratic idle and hesitation — one of the most searched CEL complaints on the SOHC Explorer.

    This issue also affects: Ford Edge, Ford Escape, Ford Escort

    Common Symptoms

    • Check engine light with P0171 and P0174
    • Rough or erratic idle
    • Hesitation/stumble on acceleration
    • Occasional stall at idle
    • Whistle or hiss from the intake area

    How to Fix

    Smoke-test the intake for leaks. Replace the brittle PCV elbow/hose and the upper intake manifold gaskets/O-rings; inspect the intake plenum for cracks. Clean the MAF and check for a leaking gasket at the throttle body. Address the DPFE/EGR at the same time if EGR codes are also present, then clear the adaptive fuel trims.

    Typical repair cost:$120 - $600

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 1997-2005 Ford Explorer, the 4.0L V6 uses a camshaft synchronizer (a gear-driven cylindrical housing that also drives the oil pump intermediate shaft) with the camshaft position sensor mounted on top. The plastic vane/'flag' on the synchronizer and the sensor's internal magnet wear or come apart, mangling each other. This sets a P0340 (and often P0344) cam sensor code, produces a hard misfire, rough running, and stalling. Owners report the sensor magnet falling out and destroying the vane. Because the synchronizer shaft also drives the oil pump, a badly worn/seized unit is more than an electrical nuisance.

    This issue also affects: Ford Expedition, Ford Explorer Sport Trac, Ford Crown Victoria

    Common Symptoms

    • Check engine light with P0340 / P0344
    • Rough idle and misfire under load
    • Stalling or hard start
    • Ticking/rattle from the synchronizer area
    • Occasional no-start

    How to Fix

    Replace the camshaft synchronizer AND the camshaft position sensor as a set (do not reuse an old synchronizer with a new sensor). The synchronizer must be installed with a special alignment/synchronizer positioning tool (Ford 303-589 / equivalent) so the sensor vane is clocked correctly, or the engine will run poorly or throw the code again. Verify oil pump drive engagement and confirm no plastic debris fell into the timing area.

    What you need to fix it

    Only diagnosis- and fitment-reviewed repair parts are linked here.

    • Engine Camshaft Position Sensor
      Cross-ref235-1027

      Fitment confirmed against the ShowMeTheParts catalog for this vehicle's year and engine.

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    Typical repair cost:$150 - $500

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 1997-2001 Ford Explorer, the 5R55E five-speed automatic (behind the 4.0L before the 5R55W/S arrived for 2002) commonly loses reverse and/or slips in Drive/1st as the low/reverse sprag, reverse clutch pack, and forward clutch wear. A broken tab on the pressure-regulating (EPC) solenoid in the valve body drops line pressure, so reverse — which needs the most pressure — engages late or not at all, and the engine flares on deceleration. High-mileage owners search this heavily as the truck 'won't back up.'

    This issue also affects: Ford Crown Victoria, Ford Explorer Sport Trac, Ford EcoSport

    Common Symptoms

    • No reverse or delayed/harsh reverse engagement
    • Slipping or no movement in Drive/1st
    • Engine flare/rev on deceleration
    • Delayed forward engagement when cold
    • Burnt-smelling or dark transmission fluid

    How to Fix

    Diagnose with a line-pressure test and pan inspection before condemning the unit. Common repairs are the low/reverse sprag, reverse/forward clutch packs, and valve-body/EPC solenoid rebuild; worn units warrant a full rebuild. Service fluid and filter regularly; low/burnt fluid accelerates clutch slip. Address any radiator internal-cooler contamination first, as coolant intrusion is a frequent root cause.

    Typical repair cost:$900 - $3,000

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 1997-2004 Ford Explorer, on 4.0L Explorers (both the OHV Cologne and the later SOHC V6) P1506 is a common high-idle complaint on higher-mileage trucks. The idle air control valve sits on the throttle body and meters bypass air around the closed throttle plate. Crankcase vapour routed through the PCV system, plus normal intake carbon, gradually coats the IAC pintle and its seat. The pintle stops seating fully, so even when the PCM commands the valve to its minimum duty cycle, more air keeps bleeding past than the strategy allows. The PCM compares commanded position against actual RPM, sees idle running above the target, and stores P1506. The second pattern on this platform, and the one that catches people who have already thrown an IAC at the truck, is an EVAP canister purge valve stuck partly open. The purge valve is plumbed into intake vacuum downstream of the throttle plate, so a leaking purge solenoid is functionally an uncommanded vacuum leak the IAC cannot compensate for. Ford's diagnostic material for P1506 lists the EVAP purge system among the causes, and Explorer owners repeatedly report replacing the IAC, clearing the code, and having it return until the purge valve is addressed. Owners describe a cold-start flare that will not come down until the transmission is put in gear, a hanging idle on deceleration, an idle that stays elevated when warm, and a slight lurch when shifting into drive. Fuel economy drops and the truck can creep against the brakes at a stop.

    This issue also affects: Ford Explorer Sport Trac, Ford Escape

    Common Symptoms

    • High idle at 1,100-1,300 RPM when warm
    • Cold-start idle flare to 1,800-2,000 RPM that will not come down
    • Idle only drops after shifting into gear
    • Hanging idle on deceleration
    • Check engine light on
    • Reduced fuel economy
    • Vehicle creeps against the brakes at a stop

    How to Fix

    Diagnose in order rather than parts-swapping. First, unplug the IAC connector with the engine warm and idling. A healthy system drops to roughly 500-600 RPM or stalls; if idle stays high with the IAC electrically disconnected, the extra air is entering somewhere else and the IAC is innocent. Second, pinch off the PCV hose and the EVAP purge line one at a time and watch for the idle to fall; a drop when the purge line is clamped condemns the purge solenoid. Third, smoke-test the intake tract from the MAF to the manifold, paying attention to the accordion inlet tube, the PCV grommet, and the intake gasket. If the IAC itself is at fault, replace it with a Motorcraft unit rather than a cheap aftermarket valve. Avoid soaking the valve in carburetor cleaner, since solvent attacks the internal seals and bearing; light cleaning of the throttle bore and IAC passage is fine, but a valve that already sets P1506 is usually worn as well as dirty. Clean the throttle body and verify the throttle plate closes fully and that nobody has cracked the throttle-stop screw open. After the repair, disconnect the battery or clear KAM, then let the engine idle-relearn: run it for about five minutes with the headlights and A/C on, then drive a normal mixed cycle. If a stuck purge valve was found, replace the solenoid and inspect the canister lines, then repeat the relearn. Skipping the relearn is why some owners think the repair failed.

    Typical repair cost:$120 - $420

    Research This Issue

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    Community Reported
    Low ConfidenceVerifiedReviewed Sep 2026

    On the 1997-2005 Ford Explorer, the Differential Pressure Feedback EGR (DPFE) sensor on the 4.0L/4.6L Explorer has a very high failure rate past ~60k miles. Internal corrosion makes it under-report EGR flow, so the PCM sets P0401 (insufficient EGR flow) and can hold the EGR valve open too long, producing a lean condition and companion P0171/P0174 codes. Clogged EGR passages and a stuck EGR valve compound the problem. It is a top check-engine-light search for these trucks because the codes are alarming but the fix is usually cheap.

    This issue also affects: Ford Bronco, Ford Bronco Sport, Ford E-Series

    Common Symptoms

    • Check engine light with P0401
    • Companion P0171 and/or P0174 lean codes
    • Rough idle or light hesitation
    • Occasional pinging under load
    • Failed emissions test

    How to Fix

    Test/replace the DPFE sensor (an inexpensive Motorcraft/aftermarket part), clean or replace the EGR valve, and clear the carbon-clogged EGR tube/ports. Confirm the two rubber DPFE hoses are intact. If lean codes persist, inspect for the intake/PCV vacuum leaks common to this engine.

    Typical repair cost:$80 - $350

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026

    On the 1995-2010 Ford Explorer, the cable-drive window regulators on the Explorer/Mountaineer/Sport Trac fail as their plastic cable guides crack and the steel lift cable frays or jumps off the drum. The window then binds, drops crooked, or falls down inside the door — the motor often still runs. The front door regulators are the most common, and the original glass/regulator is riveted, complicating the repair. A very high-frequency 'window fell down' search across the whole 1994-2010 range.

    This issue also affects: Ford Explorer Sport Trac

    Common Symptoms

    • Window drops into the door and won't raise
    • Grinding/clunk from inside the door while the motor spins
    • Window rises crooked or binds partway
    • Popping noise then a stuck window
    • Glass off its track/loose

    How to Fix

    Replace the window regulator (motor is usually reusable, but many buy the regulator-plus-motor assembly). Drill out the factory rivets and secure the new regulator with bolts; tape or suction-cup the glass in the up position before unbolting so it can't drop and shatter. Lubricate the run channels to reduce load on the new regulator.

    Typical repair cost:$120 - $400

    Research This Issue

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    Community Reported
    Medium ConfidenceVerifiedReviewed Jul 2026
    NHTSA Recalls7 recalls

    EQUIPMENT

    MARATHON IS RECALLING CERTAIN SEAT COVERS, BRAND SUPERHIDES WITH PART NUMBERS 593, 594, 578, 960, 228, 228-09, 267-08, 333, 625, AND 630, SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE SEAT COVERS ARE MADE OF HEAVIER THREAD AND ARE NOT COMPATIBLE WITH SEATS CONTAINING SIDE AIRBAGS. THE HEAVIER SEAT COVER COULD INTERFERE WITH FULL DEPLOYMENT OF THE AIRBAG IN THE EVENT OF A CRASH.

    Campaign #10E04300003/09/2010

    VISIBILITY:GLASS, SIDE/REAR

    CERTAIN CURVED TEMPERED REPLACEMENT GLASS MANUFACTURED BY HANGZHOU SAFETY GLASS LTD AND SUPPLIED TO SAFELITE BY AUTO TEMP INC., IDENTIFIED AS DOT-430, AND SOLD FOR USE ON CERTAIN DOMESTIC AND FOREIGN VEHICLES MAY NOT BREAK INTO SMALL PIECES AS EXPECTED OF TEMPERED GLASS AND FAILS TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 205, "GLAZING MATERIALS."

    Campaign #07E10400011/12/2007

    POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

    ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH THE 4.6L ENGINE AND 6R TRANSMISSION, THE BOLT SECURING THE TRANSMISSION OIL COOLER LINE FITTINGS AT THE TRANSMISSION MAY NOT HAVE BEEN SUFFICIENTLY TORQUED DURING VEHICLE ASSEMBLY. AS A RESULT, THE BOLT MAY LOOSEN AND THE TRANSMISSION OIL COOLER LINES MAY DISENGAGE FROM THE TRANSMISSION, CAUSING A TRANSMISSION FLUID LEAK.

    Campaign #07V45300026/09/2007

    EXTERIOR LIGHTING

    CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.

    Campaign #06E04900024/05/2006

    VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

    ON CERTAIN TRUCKS, PASSENGER CARS AND SPORT UTILITY VEHICLES, THE WINDSHIELD WIPER MOTOR MAY HAVE BEEN PRODUCED WITHOUT GREASE BEING APPLIED TO THE OUTPUT SHAFT GEAR.

    Campaign #05V52000009/11/2005

    + 2 more recalls. Check all on NHTSA.gov

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    Frequently Asked Questions

    What are the most common Ford Explorer problems?

    According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2000 Ford Explorer has 9 documented issues. The most frequently reported are: Firestone/Wilderness AT Tire Tread Separation Causing Blowouts and Rollovers (Recall EA00-023), 5R55E Automatic Transmission Reverse Loss and Forward Clutch Slipping, Cruise Control Deactivation Switch Brake Fluid Leak and Underhood Fire Risk. Of these, 4 are rated critical and should be addressed promptly.

    Is the Ford Explorer reliable?

    The 2000 Ford Explorer has 9 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: Firestone/Wilderness AT Tire Tread Separation Causing Blowouts and Rollovers (Recall EA00-023) and 5R55E Automatic Transmission Reverse Loss and Forward Clutch Slipping and Cruise Control Deactivation Switch Brake Fluid Leak and Underhood Fire Risk and Timing Chain Cassette and Guide Failure on 4.0L SOHC V6. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

    How much does it cost to fix common Ford Explorer problems?

    Repair costs for known Ford Explorer issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Firestone/Wilderness AT Tire Tread Separation Causing Blowouts and Rollovers (Recall EA00-023), typically costs $0-$900 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

    What is the 1995-2001 Ford Explorer Firestone/Wilderness AT Tire Tread Separation Causing Blowouts and Rollovers (Recall EA00-023)?

    The 1995-2001 Explorer was factory-fitted with P235/75R15 Firestone Radial ATX, ATX II and Wilderness AT tires that suffered tread-belt separation, especially in hot climates and when underinflated to Ford's low placard pressure. A rear tread separation at highway speed frequentl… Repairs typically run $0-$900. Severity: high.

    What is the 1997-2001 Ford Explorer 5R55E Automatic Transmission Reverse Loss and Forward Clutch Slipping?

    The 5R55E five-speed automatic (behind the 4.0L before the 5R55W/S arrived for 2002) commonly loses reverse and/or slips in Drive/1st as the low/reverse sprag, reverse clutch pack, and forward clutch wear. A broken tab on the pressure-regulating (EPC) solenoid in the valve body d… Repairs typically run $900-$3,000. Severity: high.

    What is the 2000-2010 Ford Explorer Cruise Control Deactivation Switch Brake Fluid Leak and Underhood Fire Risk?

    Many Ford vehicles of this era, including the Explorer, were subject to recalls for the speed control deactivation switch mounted on the brake master cylinder. The switch can leak brake fluid internally, overheat, and in some cases cause an underhood fire even when the vehicle is… Repairs typically run $0-$250. Severity: high.

    What is the 2000-2010 Ford Explorer Timing Chain Cassette and Guide Failure on 4.0L SOHC V6?

    The 4.0L SOHC Cologne V6 is notorious for timing chain guide and cassette failures, especially the rear cassette that is difficult to access with the engine installed. Plastic guide material breaks down over time, causing startup rattle, persistent chain noise, cam timing errors,… Repairs typically run $1,800-$4,500. Severity: high.

    What is the 1997-2004 Ford Explorer Carbon-Clogged Idle Air Control Valve and Stuck EVAP Purge Valve Cause High Idle?

    On 4.0L Explorers (both the OHV Cologne and the later SOHC V6) P1506 is a common high-idle complaint on higher-mileage trucks. The idle air control valve sits on the throttle body and meters bypass air around the closed throttle plate. Crankcase vapour routed through the PCV syst… Repairs typically run $120-$420. Severity: medium.

    What is the 1997-2003 Ford Explorer Intake Manifold / PCV Vacuum Leak on 4.0L SOHC Causing P0171/P0174 Lean Codes and Rough Idle?

    The 4.0L SOHC V6 is notorious for lean-bank codes P0171 and P0174 caused by unmetered air leaks rather than a dirty MAF. The plastic upper intake manifold and its rubber O-ring gaskets, plus the heat-degraded PCV elbow/hose near the throttle body, crack and collapse under vacuum,… Repairs typically run $120-$600. Severity: medium.

    What is the 1997-2005 Ford Explorer 4.0L SOHC Camshaft Position Sensor and Synchronizer Failure Causing P0340 Misfire and Stalling?

    The 4.0L V6 uses a camshaft synchronizer (a gear-driven cylindrical housing that also drives the oil pump intermediate shaft) with the camshaft position sensor mounted on top. The plastic vane/'flag' on the synchronizer and the sensor's internal magnet wear or come apart, manglin… Repairs typically run $150-$500. Severity: medium.

    What is the 1997-2005 Ford Explorer DPFE Sensor / EGR Failure Setting P0401 and Companion P0171/P0174 Lean Codes?

    The Differential Pressure Feedback EGR (DPFE) sensor on the 4.0L/4.6L Explorer has a very high failure rate past ~60k miles. Internal corrosion makes it under-report EGR flow, so the PCM sets P0401 (insufficient EGR flow) and can hold the EGR valve open too long, producing a lean… Repairs typically run $80-$350. Severity: low.

    What is the 1995-2010 Ford Explorer Power Window Regulator Cable/Clip Failure Causing Window to Fall Into the Door?

    The cable-drive window regulators on the Explorer/Mountaineer/Sport Trac fail as their plastic cable guides crack and the steel lift cable frays or jumps off the drum. The window then binds, drops crooked, or falls down inside the door — the motor often still runs. The front door… Repairs typically run $120-$400. Severity: low.

    Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

    Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.