You need to take it to a shop that does wheel alignments, it's beyond the scope of a home mechanic.
You can't fix it till you know what's wrong with it.
There is no way to change gear ratios.
Replace the instrument cluster.
It is not repairable, you should replace the instrument cluster.
These parts are only fixed by replacement.
There is no fixing a broken motor mount. Replace them with a new ones.
remove the battery terminals for a minimum of 10 minutes.
You would fix it by replacing the instrument cluster. The speedometer itself may not be faulty, it is more likely to be a problem with the speed sensor.
Check fuses If you are getting power to socket, but not through it ,replace socket
You would need to be more specific with your question. You are not providing enough information to supply a meaningful answer.
To fix a misaligned power window on a 1998 Mercury Villager, first, remove the door panel to access the window mechanism. Check for any obstructions, such as debris or damaged components, along the window track. If the alignment is off, loosen the window regulator bolts and carefully reposition the window to ensure it sits properly in the track before tightening the bolts again. Finally, reassemble the door panel and test the window operation to ensure it rolls down completely.
Have you checked the rear hatch glass ?? Open it and reclose it firmly.