2002. It loads a CD, but why is there no sound output?

SOURCE: How do you access the spark plugs 2002 mercury mountaineer

IIRC these are a coil over design. meaning the coil is over the plug. the coil should have one 8mm bolt holding it on the lower intake manifold. remove the coild to get to the spark plugs. look by the fuel injectors, coil should be just next to it or very close. coil usually says motorcraft on it and circle in design.

good luck
Michael
ASE certified

Marvin

• 85242 Answers
• Posted on Mar 23, 2009

SOURCE: 2002 mercury mountaineer 4.0 starter relay location

The power distribution box is
located in the engine compartment.
The power distribution box contains
high-current fuses that protect your
vehicle’s main electrical systems
from overloads.
The starter relay is in position #56 of that box.

SOURCE: 6 disc changer will not eject cds==

I had the same problem for months. I checked the owners manual, checked the fuse box, everything I could think of. Then, today, I did some online research and someone said one of the CD's is probably just jammed or slipped out a bit. The suggestion was to gently slide a credit card over the disk (through the door/slot, which in my case was partially open). I just tried it. The door closed and the message said "initializing". It worked! The CD player is back to normal.

SOURCE: 2000 mercury mountaineer mach radio cd cassette

best bet is to chage your radio get a new one best buy has some good dual din radios

SOURCE: Mercury mountaineer check engine light help

My 2002 M Mountaineer had the same problem and was fixed by reading the code that showed a leak in the gas tank pressure via the cap. When I replaced this with a good after market cap and drove the car for a while and it cleared itself. A mechanic told me that's not possible, but it did clear and has not lit up except on start up where it lights for a few seconds to test the bulb - a normal function.