Hey guys, i have a 91 and the thermostat was stuck open for quite some time and i just recently replaced it but now that the engine is running smother it feels as if the car is sluggish. Im thinkin the cats are clogged causeing exhaust fumes to go back into the motor. Im sure this is really bad for the car but what problems can occur from this? and what would be recommended in fixing this problem? thanks guys
Brandon
Brandon