The 2001 Cherokee (XJ) is the final year of a legendary platform known for the bulletproof 4.0L inline-six, but suffers from aging transmission and cooling system weaknesses plus rust-prone unibody structure that can compromise safety.
AW4 / 42RE Transmission Fluid Cooler Line Failure
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Transmission fluid leaking from radiator area or cooler lines, Pink milkshake fluid in radiator (cooler rupture allows trans fluid and coolant to mix), Sudden transmission slipping or failure after coolant contamination
Fix: Replace transmission oil cooler lines (prone to corrosion), flush transmission completely if contamination occurred, or full transmission rebuild if coolant got into valve body. Prevention: replace cooler lines proactively and add external cooler. 2-4 hours for lines, 12-18 hours for rebuild.
Estimated cost: $300-800 for lines and flush, $2,200-3,500 for rebuild if contaminated
0331 Cylinder Head Casting Crack (4.0L)
Occasional · high severity
Typical onset: 90,000-180,000 mi
Symptoms: Coolant loss with no visible external leaks, White smoke from exhaust on cold start, Overheating under load, Coolant in oil or oil in coolant (milky dipstick)
Fix: The infamous 0331 head (1999-2001) cracks between cylinders 3-4 due to casting flaw. Requires cylinder head replacement with updated 0630 or TUPY casting, machining, new head gasket, and bolts. Some shops warranty this fix. 10-14 hours labor.
Estimated cost: $1,800-2,800
Death Wobble (Front Suspension / Steering)
Common · high severity
Typical onset: 70,000-140,000 mi
Symptoms: Violent steering wheel oscillation at highway speeds, triggered by bumps, Wandering or loose steering feel, Clunking from front end over bumps
Fix: Caused by worn track bar bushings, tie rod ends, ball joints, or unit bearings compounding each other. Requires systematic replacement of worn steering/suspension components and proper alignment. Track bar and tie rods are most common culprits. 4-8 hours depending on extent.
Estimated cost: $600-1,500
Rear Main Seal and Oil Pan Gasket Leaks (4.0L)
Common · low severity
Typical onset: 100,000-200,000 mi
Symptoms: Oil puddles under rear of engine, Oil coating transmission bellhousing, Oil drips from oil pan seam
Fix: The 4.0L weeps oil from rear main seal and oil pan gasket as it ages. Rear main requires transmission removal. Oil pan is easier but needs engine lift or crossmember drop for clearance. 3-4 hours for pan, 6-8 hours for rear main.
Estimated cost: $400-700 for oil pan, $800-1,200 for rear main
Symptoms: Visible rust perforation along rocker panels behind doors, Sagging rear hatch or misaligned doors, Soft or rusted floor pans, especially driver's side, Crusty rear lower quarter panels
Fix: The unibody structure rusts from the inside out in salt states. Rockers and rear quarters are structural — when compromised, frame stiffness is lost. Proper fix requires cutting out rust and welding in new metal. Undercoating only hides the problem. 10-30+ hours depending on severity.
Estimated cost: $1,500-5,000+ for welded repairs
Fuel Pump Failure (In-Tank)
Occasional · medium severity
Typical onset: 120,000-180,000 mi
Symptoms: No start or extended cranking when hot, Sputtering or loss of power under acceleration, Stalling at idle or when fuel level is low
Fix: In-tank pump fails from age and contamination. Requires tank drop and sender unit replacement. Use quality pump (Bosch or OEM) — cheap aftermarket units fail quickly. 2-3 hours labor.
Estimated cost: $400-700
Evaporative Emissions System Leaks (EVAP)
Common · low severity
Typical onset: 80,000-150,000 mi
Symptoms: Check Engine Light with P0455 or P0442 codes, Fuel smell near rear of vehicle, Difficulty filling gas tank (premature shutoff)
Fix: Cracked EVAP lines, leaking gas cap seal, or failed leak detection pump. Lines become brittle with age. Requires smoke test to pinpoint leak location. 1-3 hours depending on location.
Estimated cost: $150-500
Owner tips
Replace transmission cooler lines before they fail — this is cheap insurance against catastrophic transmission damage
If buying used, inspect for 0331 head casting number and verify cooling system health — budget for head replacement on high-mileage examples
Thoroughly inspect unibody structure for rust before purchase, especially rockers and floor — surface rust is just the beginning
Upgrade to external transmission cooler if towing or in hot climates
Service transmission fluid every 30,000 miles to extend life — they run hot and fluid breaks down quickly
Buy the 4.0L if the unibody is solid and the head has been replaced or verified good — it's a capable, simple platform, but rust and the 0331 head are deal-breakers if present.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
Consequence: DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
Remedy: DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON JULY 28, 2009. OWNERS MAY CONTACT DOPE, INC. AT 1-626-272-1798.
EXTERIOR LIGHTING · 09E012000
2009-04-07
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
Consequence: DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
Remedy: SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT 1-909-598-7589.
EXTERIOR LIGHTING · 06E065000
2006-07-17
CERTAIN AJ MOTORSPORT COMBINATION LAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LISTED PASSENGER VEHICLES. COMBINATION LAMPS NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.
Consequence: LACK OF AMBER SIDE REFLECTORS IN THE LAMPS WILL DECREASE LIGHTING VISIBILITY TO OTHER DRIVERS AND MAY POSSIBLY RESULT IN A VEHICLE CRASH.
Remedy: AJ MOTORSPORT WILL NOTIFY OWNERS AND OFFER REIMBURSEMENT FOR THE LAMPS. THE RECALL BEGAN ON JULY 31, 2006. OWNERS MAY CONTACT AJ MOTORSPORT AT 626-618-2026.
EXTERIOR LIGHTING · 06E026000
2006-03-23
CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN 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.
Consequence: WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICLE CRASH WITHOUT WARNING.
Remedy: PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 2006. OWNERS MAY CONTACT PRO-A MOTORS AT 323-838-2988.
SERVICE BRAKES, HYDRAULIC · 06E022000
2006-03-13
CERTAIN AFTERMARKET BRAKE HYDRAULIC MASTER CYLINDERS SOLD AS REPLACEMENT BRAKE CYLINDERS FOR CERTAIN FORD, DAIMLERCHRYSLER, AND JEEP PASSENGER VEHICLES. THESE BRAKE CYLINDERS WERE SOLD UNDER THE BRAND NAMES OF NAPA, RAYBESTOS, AIMCO, AC DELCO, CARQUEST, BENDIX, AND WAGNER. ONLY PRODUCTS THAT WERE MANUFACTURED FROM JULY 27, 2005 THROUGH JANUARY 17, 2006 (DATE CODES 0529 THROUGH 0602) ARE SUBJECT TO THIS RECALL. WHEN SUBJECT TO VERY COLD TEMPERATURES, AN INTERNAL SEAL IN THE MASTER CYLINDER COULD LOSE FLEXIBILITY AND MAY CAUSE BRAKE FLUID TO LEAK.
Consequence: LOSS OF BRAKE FLUID CAN LEAD TO A DECREASE IN BRAKE LINE PRESSURE AND AN INCREASE IN STOPPING DISTANCE, WHICH CAN RESULT IN A VEHICLE CRASH.
Remedy: AFFINIA (BRAKE PARTS, INC.) WILL REPLACE THE SUBJECT BRAKE HYDRAULIC MASTER CYLINDERS FREE OF CHARGE. THE RECALL BEGAN ON MARCH 20, 2006. OWNERS CAN CONTACT AFFINA GROUP CUSTOMER SERVICE AT 1-800-323-0354.
CERTAIN AFTERMARKET AIRTEX ELECTRIC FUEL PUMPS INSTALLED FOR USE AS REPLACEMENT EQUIPMENT FOR CERTAIN 1997-2004 JEEP WRANGLER; 1997-2001 JEEP CHEROKEE; 1997-2004 JEEP GRAND CHEROKEE; AND 2000-2003 DODGE DAKOTA VEHICLES. THE PLASTIC ELECTRICAL GROMMET CONNECTORS AT THE TOP OF THE FUEL PUMP MODULE ARE NOT COMPATIBLE WITH AUTOMOTIVE FUELS AND MAY DEGRADE CAUSING A POTENTIAL LEAK PATH FOR FUEL.
Consequence: IN THE PRESENCE OF AN IGNITION SOURCE, A FUEL LEAK COULD RESULT IN A FIRE.
Remedy: AIRTEX WILL NOTIFY ITS CUSTOMERS AND WILL REPLACE THE AFFECTED FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON JANUARY 25, 2006. OWNERS MAY CONTACT AIRTEX CUSTOMER SERVICE DEPARTMENT AT 1-800-880-3056.
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH A 4.0L ENGINE ONLY, THE DESIGN OF THE INTAKE AND EXHAUST MANIFOLDS COULD ALLOW DEBRIS TO ACCUMULATE AT THE #3 CYLINDER LOCATION.
Consequence: THIS COULD RESULT IN A VEHICLE FIRE.
Remedy: DEALERS WILL INSTALL A MANIFOLD SHIELD TO MODIFY THE AIR FLOW CHARACTERISTICS AND TO PREVENT THE ACCUMULATION OF DEBRIS IN THE AREA OF THE #3 CYLINDER. OWNER NOTIFICATION BEGAN MAY 13, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT DAIMLERCHRYSLER AT 1-800-853-1403.
CHILD SEAT · 00V366000
2000-11-09
VEHICLE DESCRIPTION: CERTAIN PASSENGER VEHICLES, PICKUP TRUCKS AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEMS." SOME OF THE OWNER'S MANUALS FOR THESE VEHICLES ARE MISSING INSTRUCTIONS THAT PROVIDE A STEP-BY-STEP PROCEDURE, INCLUDING DIAGRAMS, FOR PROPERLY ATTACHING A CHILD RESTRAINT SYSTEM'S TETHER STRAP TO THE TETHER ANCHORAGE.
Consequence: IN THE EVENT OF A CRASH, THE CHILD SEAT MAY NOT BE PROPERLY ATTACHED INCREASING THE RISK OF INJURY TO THE CHILD.
Remedy: OWNERS WILL BE PROVIDED WITH AN ADDENDUM TO THE OWNER'S MANUALS.
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