i love my 92 lx she has almost 119,000mi..with 78,000 miles, if she hasnt maintained it u are looking at some pricey upfront maintenance of original parts, dry rot, carbon build up.. if the tranny is fine, the engine doesnt leak or blow oil, valves can still be adjusted..check the plugs they will tell u whats up with the engine.. the head gasket ok, cooling system doesnt leak/clogged, axles, brakes, exhaust ok .. its an easy car to work on yourself.. see if she has ever replaced the distributor and when the timing belt was done.. on the ac, cheaper to convert it over to r134...check engine light/high idle could be something simple like the 02 sensor, carbon build up...clogged intake/throttle body, dirty iac valve, clogged egr ports, clogged pcv valve, slipping clutch, dirty air filter.. check the dog legs for some serious rust, pull the bumper back alittle, 1 to 2 clips hold it on, just pop them and look. also the wheel well area, behind the dog legs nasty rust hiding there too.. check in the trunk pull the liners back look down the sides, bondo wont fix this..it will need to be cut out.. the roof is clear coat failure it will need to be repainted.