so my alternator caght on fire today... i gues they all had some sort of defect that the new one said was retrofitted not to have the same problem. w the question... i replaed the thermostat all hoses thermo housing and coolant... and now the car runs cool ranges from the N and O in normal most of the time and rarly gets a little closer to the middle in traffice or wen its hot... my concern is with the computer not working... at what temp does the loop open? am i getting optimal performance and gas milage.... btw its a completely stock 86 with 70k original.