Where is the speed sensor on a 1995 Mercury Villager I just changed mine and it is located on the top right side of the tranny. There will probably be a pair of wires and/or a speedo cable coming out of it. The vehicle needs to be raised to remove it. If you have a lift, even better, but make sure you properly raise and support it for your own safety. A single bolt holds it in, and the body of the sensor may need to be heated for removal. Good luck my friend.
Mass air flow sensor is mounted after the air filter.
There is no such thing. The odometer is electrically driven from the PCM via the vehicle speed sensor. If the odometer has failed you need to replace the cluster.
There is no such part on a Mercury Villager.
yes!
right above the oil filter on the transmission side of the filter mount
Yes, it should fit.
No, there is no "adjustment".
Buy a manual.
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Powertrain Control Module