ok ....so im new here and dont even know where to start. i bought a 1987 acura integra with 120,000 miles. from day one the car seems sluggish. i have owned 2 preludes, and a accord. none were race cars but had some pep to them...this car is a dog........ok so...... i had intermittent cooling problems with it off the bat....the dealer i bought it from replaced the head gasket, timing belt, clutch.....so i replaced the radiator, rad. cap, hoses, t-stat (3 times). cooling was better, heater blows warm but not hot. lately the car seems to be running alot worse... and heats up hot...then will cool off. just last week i replaced ...plugs wires cap rotor and had an injector purge completed.....reading on mitchell about the led light on the ecu under the pass seat for reading codes, key on, with pgm fi light on and sequence of one blink, the o2 sensor should be bad.....wella after i replaced the 02 the car seemed to run better (not purfect) for about 10 min...the pgm fi light came on again, instantly the car runs like fug and the led is flashing a code for o2 again.....well the car overheats (waterpump?) and runs like shiaaat.....(help?)........let me know what u guys think....