The 1998 Mercury Mountaineer Service and Repair Manual is a practical, workshop-ready reference for maintenance, diagnostics, and repairs. Use it to troubleshoot symptoms, follow step-by-step procedures, verify specifications, and confirm wiring and connector locations before replacing parts.
Ideal for technicians and DIY owners, it supports everything from routine service to deeper mechanical and electrical work—including drivability, no-start, warning lights, overheating, brake and suspension issues, HVAC faults, and circuit testing.
Trims covered
- Base Sport Utility 4-Door
Engines covered
- 4.0L 245Cu. In. V6 GAS SOHC Naturally Aspirated
- 5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated
What’s inside
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
Why this manual matters
- Faster diagnostics with system-based troubleshooting and wiring diagrams
- Clear procedures and reference sections to reduce guesswork and rework
- Helpful for maintenance planning and verifying parts/specs before repairs
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH HIGH BACK SEATS, THE UPPER BOLT ON THE DRIVER'S SIDE HIGH BACK SEAT, THAT ATTACHES THE SEAT RECLINER MECHANISM TO THE SEAT BACK FRAME, COULD FRACTURE.
THE DRIVER COULD POTENTIALLY LOSE CONTACT WITH THE STEERING WHEEL OR FOOT PEDALS DURING SUCH AN EVEN
DEALERS WILL REPLACE THE DRIVER SEAT UPPER BOLT WITH A METAL SPACER AND BOLT. IN ADDITION, SEATS WI
FRONT AXLE LEAKS FLUID FROM VENT TUBE - VEHICLES EQUIPPED WITH 4X4 OR AWD. *TT
GENERAL (PCM) POWER TRAIN CONTROL MODULE PROGRAMMING PROCEDURES. *TT
GENERAL POWER TRAIN CONTROL MODULE (PCM) PROGRAMMING PROCEDURES. *TT
CLIMATE CONTROL A/C SERVICE TECH TIPS. *EH
LAMP-BRAKE-INVADVERTENT DISABLING OF BRAKE SHIFT INTERLOCK. *MJ
ENGINE-GEAR DRIVEN SYNCHRONIZERS-INCORRECT INSTALLATION-CAMSHAFT POSITION SYNCHRONIZER (CMP) INSTALLATION TOOL CORRECT APPLICATION. *MJ
NEW SERVICE PART - NUMBER 5 NEEDLE BEARING AND RACE KIT - 4R70W TRANSMISSION - SERVICE TIP. *TT
DRIVEABILITY-MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED-DIAGNOSTIC TROUBLE CODES (DTC'S) P0420 AND/OR P0430. *MJ
Showing the 8 most recent of 282 technical service bulletins on file with NHTSA.
CONSUMER HAD JUST TURNED OFF THE HIGHWAY AND WAS TRAVELING ON A DIRT ROAD WHEN VEHICLE JERKED TO RIGHT AND THEN ROLLED OVER. CONSUMER AND HER DAUGHTER WERE THROWN OUT FROM VEHICLE. CONSUMER WA
CONSUMER HAD JUST TURNED OFF THE HIGHWAY AND WAS TRAVELING ON A DIRT ROAD WHEN VEHICLE JERKED TO RIGHT AND THEN ROLLED OVER. CONSUMER AND HER DAUGHTER WERE THROWN OUT FROM VEHICLE. CONSUMER WA
WHEN THE 1998 MERCURY MOUNTAINEER WAS RUNNING ON HWY 121 SOUTH MERGING INTO HWY 114 WEST IN GRAPEVINE, TX, THE 1998 MERCURY SUDDENLY BECAME OUT OF CONTROL AT A SPEED LESS THAN SPEED LIMIT. THE CAR WA
WHEN THE 1998 MERCURY MOUNTAINEER WAS RUNNING ON HWY 121 SOUTH MERGING INTO HWY 114 WEST IN GRAPEVINE, TX, THE 1998 MERCURY SUDDENLY BECAME OUT OF CONTROL AT A SPEED LESS THAN SPEED LIMIT. THE CAR WA
Showing the 4 most serious of 298 complaints filed with NHTSA.
