The tensioner arm on a 2003 Mercury Mountaineer is located on the front of the engine, near the serpentine belt. It is typically positioned near the alternator and Power Steering pump, and it is responsible for maintaining the proper tension on the serpentine belt. To access it, you may need to remove or move aside some engine components for better visibility and ease of operation.
The computer module in a 2003 Mercury Mountaineer is located behind the rear right panel in the truck space. The rear right seat belt panel must be removed and then the lower panel. The module is located beneath a green plug.
That would be the 4.6 liter engine, which takes six quarts. * of 5W-20 according to the 2003 Mercury Mountaineer Owner Guide
According to the 2003 Mercury Mountaineer Owner Guide : ( DOT 3 brake fluid , meeting Ford specification ESA-M6C25-A )
Behind the drivers side rear quarter panel in the cargo area
I get 15.3 in my 2005.
4
( # 24 ) is a blue color 15 amp fuse for the cigarette lighter and OBD II in a 2003 Mercury Mountaineer ( under the instrument panel )
On a 2003 Mercury Mountaineer , 4.6 litre V8 engine : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
In the front of the engine compartment , on the passenger side , inside the engine air filter housing
My code was located in the compartment with my jack. It is on the side of the white computer box. Hope this helps.
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only when it begins to fail.