Famous for rear disc brakes not working. Lack of using the parking brake for years causes rear caliper pistons to seize. To verify, put car in gear then depress the parking brake and hold it down, then slowly remove foot from regular brake pedal. If the car creeps forward, rear brakes not working!! Usually needs 2 rear calipers to fix. Eldos require air shocks on the rear to keep them level. Most 25 yr. old shocks are not only worn out but leak air. Look thru behind the rear tire to see if the've been replaced. This engine needs antifreeze changed every 2 years without fail and sealant added per the decal on the fan shroud. Failure to do this will cause engine camshaft failure at a minimum and crankshaft failure at the worst. Check both front outer axle boots for maybe being torn. Window issues are usually the master switch on the driver door. Common for the smog pump belt to be loose which causes the alternator to slip causing a weak/ dead battery. Left exhaust manifold comes loose and leaks exhaust under the sheet metal heat stove to the air cleaner.