the best thing you could do is sell that mounaineer and get a new car, problem solved, you're welcome.
I just purchased one for my 1997 merc mountaineer, i was up under it and found that the transmission cross member makes it very hard to get to, i may have to remove the cross member and support the tranny with hyd jack while i replace it, I allready know that you will have to modify a wrench, ie: cut off or shorten so as to be able to tighten the plug. This is where one of those times where the metric matches the American size. You can use a 7/8" end wrench or a metric size which ever you prefer. If I find an easier way I will let you know. I wish you well in your endeavor.
where is the speed sensor on 2002 mercury mountaineer
The first model year of the Mercury Mountaineer was 1997
The oxygen sensor for bank 1 sensor 1 for a 2000 mercury mountaineer is on the cylinder #1 side.
Bank 2 is the drivers side of the engine in a 2002 Mercury Mountaineer Sensor 2 is after the catalytic converter ( downstream )
where is the location of the vehicle speedometer sensor on a 99 Mercury Mountaineer
Bank 1 is the passenger side of the engine in your Mercury Mountaineer Sensor 1 would be close to the engine before the exhaust enters the catalytic converter ( upstream sensor )
Bank 1 is the passenger side of the engine in a Mercury Mountaineer ( V6 + V8 ) Sensor 2 is after the catalytic converter ( downstream )
Bank 2 is the drivers side of the engine in your Mercury Mountaineer ( V6 + V8 ) Sensor 1 is in the exhaust close to the engine before the exhaust enters the catalytic converter
left side of the engine after the cat
Bank 2 is the drivers side of the engine in your Mercury Mountaineer Sensor 2 is in the exhaust after the catalytic converter
on the transmission
The DPFE sensor is located in the center of the vehicle near the firewall. It is easiest to see and replace if you remove the plastic cover on top of the engine.