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1997 Mercury Mountaineer

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1997 Mountaineer.

Body SUVTransmission Automatic 4-spd

The 1997 Mercury Mountaineer is an SUV equipped with a 4-speed automatic transmission and an engine requiring 5.0 quarts of 5W-20 API oil, delivering an EPA-estimated 12 city and 17 highway mpg for a 14 combined rating. Accumulating 369 total owner complaints alongside seven recalls, the vehicle's most frequently cited problem area centers on its tires. Within the model's broader 1996–2010 complaint history, this year sits just beneath the 2002 peak of 390 complaints—dwarfing the 1996 low of only 3—meaning researchers should approach this early iteration as a notably troubled chapter rather than a baseline of reliability.

Model year2010 2009 2008 2007 2006 2005 2004 2003 1997

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.0 qtOEM · verified

Engine oil type5W-20 APIOEM · verified

Lug nut torque100 ft-lbsOEM · verified

EPA fuel economy12/17/14 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 65 · 650 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 65 · 650 CCAOEM · verified

Tire sizeP235-70R15SLOEM · verified

Wheel / rim7-JJ inOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined	12 / 17 / 14 mpg
Drivetrain	Rear-Wheel Drive
Recommended fuel	Regular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.0 qt of 5W-20 API engine oil, SYNTHETIC · 75W-140 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 100 ft-lbs, the oil drain plug to 10.0 ft-lbs. The firing order is 1-3-7-2-6-5-4-8. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake Fluid	DOT 3
Differential Gear Oil	SYNTHETIC · 75W-140 · GL-5
Differential Gear Oil Capacity	5.5 Pints (rear)
Engine Oil	5W-20 · API
Engine Oil Capacity	5.0 qt
Power Steering Fluid	ATF
Transfer Case Fluid	ATF
Transfer Case Fluid Capacity	3 PINTS

Engine torques

Intake Manifold to Engine Bolts	Lower: 23.0-; Upper: 12.0-
Exhaust Manifold to Cylinder Head Bolts	26.0-32.0 ft-lbs
Engine Oil Pan Drain Plug	10.0 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Transfer Case Fill Plug	4WD: 18.0, With AWD: 13.0 ft-lbs
Transfer Case Drain Plug	4WD: 18.0, With AWD: 13.0 ft-lbs
Front Wheel Hub	184 ft-lbs

Ignition

Cylinder Firing Order	1-3-7-2-6-5-4-8
Curb Idle Speed (No Load)	750 rpm
Curb Idle Speed Variance (No Load)	25 rpm
Spark Plug Manufacturer	Motorcraft
Spark Plug Gap	0.052-0.056 in
Spark Plug Torque	7.0-15.0 ft-lbs
Ignition Timing	10 degrees
Ignition Timing Acceptable Variance	3 degrees

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	1.38 lbs
Oil Group	PAG
Oil Type	68
Oil Capacity	9.00 oz
Standard BCI Group Number	65
Standard BCI Cranking Performance	650 cca

Service checks

Key ON Engine OFF (KOEO)	35-45
RPM	30-45 @ Idle rpm
Engine Oil Pressure	40-60 psi
Engine Oil Pressure RPM	2000 rpm
Intake Valve Lash	Hydraulic in
Exhaust Valve Lash	Hydraulic in

Brakes

Torque Caliper to Bracket	38-48 ft-lbs
Torque to Knuckle	125-170 ft-lbs
Torque Caliper to Bracket	38-48 ft-lbs
Torque to Knuckle	125-170 ft-lbs
Torque Caliper to Bracket	20 ft-lbs
Torque to Knuckle	40 ft-lbs
Minimum Pad Thickness	Front: 0.030; Rear: 0.030 specification
Rotor Runout Limit	0.003 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 3 stages

Prep Do not reuse old bolts. Coat bolt threads with clean engine oil.

1	25.0-35.0 ft. lbs.	25–35 ft. lbs
2	45.0-55.0 ft. lbs.	45–55 ft. lbs
3	85 degrees-95 degrees	85 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 5,000 mi	Driveshaft Slip Yoke (lubricate) · Driveshaft U-Joint (lubricate) · Exhaust System (Complete) (inspect) · Shift Linkage (lubricate) · Steering Linkage (lubricate) · Suspension System (lubricate)
Every 5,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (inspect)
Every 10,000 mi	Driveshaft Slip Yoke (lubricate) · Driveshaft U-Joint (lubricate) · Exhaust System (Complete) (inspect) · Shift Linkage (lubricate) · Steering Linkage (lubricate) · Suspension System (lubricate)
Every 12,000 mi	Battery (inspect)
Every 15,000 mi	Brake System (inspect) · Disc Brake Caliper Guide Pin (lubricate) · Engine Coolant System (leak inspection)
Every 30,000 mi	Accessory Drive Belt (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Fuel Filter (replace) · Throttle Body Lever Stud (lubricate) · Transmission Assembly (drain & refill)
At 50,000 mi	Engine Coolant System (drain, flush & refill)
At 60,000 mi	Accessory Drive Belt (inspect)
Every 60,000 mi	Accessory Drive Belt (inspect) · PCV Valve (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 1997 Mercury Mountaineer, as the first model year of the generation, exhibits a notably poor federal record with 369 complaints—the second-highest of any year in the dataset, trailing only the 2002 redesign's 390 complaints. This is a sharp increase from the 1996 Ford Explorer (3 complaints, 2 recalls), and while complaints decline through 1998 (262) and 1999 (166), the 1997 year still leads the first-generation arc in both complaints and recalls (7). The top complaint areas—Tires (160), Vehicle Speed Control (43), and Service Brakes (30)—along with 42 crash and 10 fire complaints, indicate widespread safety and reliability issues that the data does not attribute to a single root cause. Given that later first-generation years like 2001 (22 complaints, 4 recalls) and second-generation years like 2003 (152 complaints, 1 recall) show far fewer problems, the 1997 Mountaineer is a high-risk purchase and not a good year to buy.

Open recalls

NHTSA campaigns

299

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

369

Owner complaints

42 involved a crash · 10 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Rollover★★★★★

Owner complaints by model year NHTSA · this generation & adjacent

’96’97’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05 ’06 ’07 ’08 ’09 ’10

Owner complaints filed with NHTSA, by component

All 369 complaints on record, top 8 components.

Tires160

Vehicle Speed Control43

Service Brakes, Hydraulic30

Engine & Engine Cooling15

Electrical System14

Suspension14

Seat Belts12

Visibility9

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 7 campaigns on record for this vehicle.

09V399000Vehicle Speed ControlReported 13/10/2009

FORD IS RECALLING MODEL YEARS 1995-2003 WINDSTAR, 2000-2003 EXCURSION DIESEL, 1993-1997 AND 1999-2003 F-250 SD THROUGH F-550 SD DIESEL, 1992-2003 E-150 THROUGH E-550, 1995-2002 EXPLORER, 1997 AND 2002 MERCURY… Remedy: FORD WILL NOTIFY OWNERS THAT DEALERS WILL INSTALL A FUSED WIRING HARNESS IN LINE WITH THE SCDS. ON 1999-2003 WINDSTAR VEHICLES WITH A LEAKING SCDS, DEALERS WILL ALSO INSPECT THE…

00V402000SuspensionReported 28/11/2000

VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. UNDER CERTAIN CONDITIONS, A FRONT SWAY BAR LINK CAN FRACTURE. Remedy: DEALERS WILL REPLACE BOTH THE LEFT AND RIGHT FRONT SWAY BAR LINKS.

Technical service bulletins NHTSA · verified

Showing 5 of 299 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
030508	2005-04-01	Power Train	FRONT AXLE LEAKS FLUID FROM VENT TUBE - VEHICLES EQUIPPED WITH 4X4 OR AWD. *TT
042107	2004-12-13	Power Train	GENERAL (PCM) POWER TRAIN CONTROL MODULE PROGRAMMING PROCEDURES. *TT
04217	2004-11-01	Power Train	GENERAL POWER TRAIN CONTROL MODULE (PCM) PROGRAMMING PROCEDURES. *TT
02138	2003-11-10	Power Train	LOW LINE PRESSURE READING AT WIDE OPEN THROTTLE (WOT), SLIPPING SHIFTS AND / OR DELAYED…
03203	2003-10-13	Electrical System	MALFUNCTION INDICATOR LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODES (DTCS) P0442, P0455…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific Mountaineer. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 65 battery Vehicles taking 5.0 qt

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 1997 Mountaineer take?

5.0 qt of 5W-20 API, per the factory manual.

Does the 1997 Mountaineer have open recalls?

NHTSA lists 7 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Mountaineer get?

EPA figures are 12 city / 17 highway / 14 combined mpg.