The 2002 S-Type shares its DEW98 platform with Lincoln LS and uses Ford components wrapped in British luxury. The 3.0L Duratec V6 is generally solid, but transmission cooling issues and upper engine failures dominate the problem list—think twice before buying high-mileage examples.
Transmission Oil Cooler Failure Leading to Transmission Destruction
Common · high severityTypical onset: 80,000-140,000 mi
Symptoms: Pink or milky transmission fluid (coolant contamination), Transmission slipping or harsh shifts after coolant mixing, Overheating transmission, burnt smell, Complete transmission failure if driven after contamination
Fix: Replace transmission oil cooler and flush system immediately if caught early (2-3 hours). If contamination occurred, expect full transmission rebuild or replacement (8-12 hours) plus cooler and all fluids. This is the number-one killer of ZF 5HP24 transmissions in these cars.
Estimated cost: $400-800 preventive cooler replacement; $3,200-5,500 if transmission is damaged
Secondary Timing Chain Tensioner and Guide Failure (V6)
Occasional · high severityTypical onset: 100,000-150,000 mi
Symptoms: Rattling noise on cold start that disappears when warm, Check engine light with cam/crank correlation codes, Rough idle or misfires, Catastrophic engine failure if chain jumps timing
Fix: Replace secondary timing chains, tensioners, guides, and cam phasers while engine is apart (12-16 hours). Front cover must come off, requires special tools. Often combined with valve cover gaskets and spark plugs while accessible.
Estimated cost: $2,800-4,200
Valve Cover Gasket and Coil Boot Deterioration
Common · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Oil pooling in spark plug wells, Misfire codes on one or multiple cylinders, Burning oil smell from valve covers, Oil seepage visible around valve cover perimeter
Fix: Replace valve cover gaskets, spark plug tube seals, and coil boots together (4-5 hours). Always replace spark plugs at same time if oil-fouled. The Duratec V6 configuration makes rear bank moderately difficult to access.
Estimated cost: $800-1,200
Upper Engine Bearing and Piston Ring Wear (High-Mileage)
Occasional · high severityTypical onset: 120,000-180,000 mi
Symptoms: Excessive oil consumption (quart per 1,000 miles or worse), Blue smoke on acceleration or deceleration, Low oil pressure at idle when hot, Knocking or ticking from upper engine
Fix: Requires engine teardown for inspection. Ring replacement alone is 18-22 hours. Rod bearing replacement adds 4-6 hours. Often more cost-effective to install rebuilt short block (14-18 hours) or used lower-mileage engine (12-16 hours) than rebuild in-chassis.
Estimated cost: $3,500-6,000 rebuilt short block installed; $4,500-7,500 full rebuild
Transmission Mounts Collapse
Common · low severityTypical onset: 70,000-120,000 mi
Symptoms: Clunk when shifting from Park to Drive or Reverse, Excessive vibration at idle in gear, Visible engine/trans movement during acceleration, Metallic bang over bumps
Fix: Replace transmission mount and often engine mounts simultaneously (2.5-4 hours total for both). Mounts are hydraulic-filled and deteriorate with age. Rear trans mount is most common failure point.
Estimated cost: $450-750
Fuel Filter Clogging and In-Tank Pump Sock Restriction
Occasional · medium severityTypical onset: 80,000-130,000 mi
Symptoms: Hard starting, especially when hot, Hesitation or stumble during acceleration, Stalling at idle or low speed, Fuel pump whine or surge noise from tank area
Fix: Replace inline fuel filter first (0.5-1 hour). If problem persists, drop tank and replace fuel pump assembly including inlet sock (3-4 hours). Many shops skip the inline filter during routine maintenance, leading to premature pump failure.
Estimated cost: $120-200 filter only; $650-950 with pump assembly
Rear Differential Bushing Wear and Subframe Movement
Occasional · medium severityTypical onset: 90,000-140,000 mi
Symptoms: Clunking from rear on acceleration or deceleration, Vibration at highway speeds, Rear-end feels loose or unsettled over bumps, Visible oil seepage from differential (may accompany bushing failure)
Fix: Replace differential mounting bushings and inspect subframe mounts (4-6 hours). Requires rear subframe to be lowered. Often discover worn diff pinion seal or output seals during this work, add 1-2 hours if leaking.
Estimated cost: $850-1,400
Buy only with comprehensive service records and budget for major repairs; the transmission cooler is a ticking time bomb, and high-mileage V6 internals are expensive to rebuild—good examples under 80K miles can be rewarding, but anything over 120K is a gamble.
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.