There really are no adjustments you can make, the MacPhereson struts are pretty much "fixed" in how they're mounted. There is a "kit" available from a company called SPC that replaces a plate at the top of the strut, and allows for Caster/Camber adjustment. The struts need to be removed to install the plates. It's really only necessary if you're "lowering" or altering the front end geometry to an extreme.
If you're having tire wear issues, and alignments don't seem to help (or "hold"), the inner bushings on your forward lower control arms are probably worn out. On your year/model, there are four bolts that hold the lower control arms into the front sub-frame. The 2 bushings lay in the front sub-frame horizontally, facing fore and aft. Once these bushings wear out, toe control of the front wheels is almost impossible to maintain. "Cupping" wear on the inside of the front tires is the usual symptom. The bushing themselves are not individaully replacable, the whole lower control arm needs to be removed and replaced. Complete lower front control arms (that include new bushings, and ball joints) are available for anywhere from $85 to $110 each. Depending on the number of miles on the car, you may want to consider replacing the struts too. Anything over 85K miles or so, is probably in need or strut replacement. Taking it to a tire shop or alignment technician, should be able to help you diagnose what is worn and needs replacing.
Sorry if it comes as "bad news". It could be expensive unless you're reasonably handy with tools. An excellent resource for answers about these cars is: www.contour.org A Ford Contour, and a Mercury Mystique are essentially the same car with minor variations
No , the 2.0 liter is not an interference engine in the 1995 Mercury Mystique
ABS came as standard equipment on the 95. It has ABS.
you can get free on line at autozone.com
Follow the + battery cable should connect to relay
Yes,it had dual front airbags as standard on all trim levels.
inch wide adjustable wrench
you need to get them down at 95 ft pounds every other
Mercury Mystique with V6 engine has two oxygen sensors. First one located between radiator and engine, second - behind the engine, near the coil pack (below). It's not very difficult to replace them.
We just changed one on a 1995 Mercury Mystique 4/95. It was located on the transmittion. They tell us there are 2 for this model, other one is supposed to be located in Instrument panel but we couldn't find it.
nothing unless the mechanics took your car off roading
behind the lefthand kick plate (by the drivers door near the pedals)
look up Mitchel books, real good resource, to explain here would be too long and complex de book has all you need.