2003 Mercury Mountaineer Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Mercury Mountaineer
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
2003 Mercury Mountaineer ProblemsWorn Timing Chain Cassettes May Cause Rattling Noise From Engine
A rattling noise from the engine may indicate that the timing chain cassette is worn. Our technicians tell us that installing an updated cassette and timing chain tensioner should correct this concern.
The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.
The composite (plastic) intake manifold may crack near the thermostat housing and cause a coolant leak. Ford released an updated manifold that was reinforced to prevent a recurrence. No recall was issued for this problem but Ford did extend the warranty to seven years on some models from the date of purchase.
2003 Mercury Mountaineer QuestionsMy ABS light is on (1 answer)
2003 Mercury Mountaineer RecallsFord Recalls 2002-2003 Ford Explorer and Mercury Mountaineer Vehicles for Liftgate Glass
Ford has recalled certain 2002-2003 model year Explorer and Mercury Mountaineer vehicles for possible issues with the liftgate glass strut brackets and glass hinges. On certain vehicles, the liftgate glass strut may come off or the hinge may fracture. This can cause the glass to fall from the liftgate, which may lead to personal injury. Dealers will replace the liftgate glass strut brackets and glass hinges.