Car Revving High and Started to Smoke

Though you may not realize it, there is a thermostatically controlled switch that sits between the radiator/cooling system and your engine and transmission. It works off the same electrics that control the fan. Now, if you replaced the fan, but failed to either replace the switch or if you forgot about it, then what is happening is that your engine and transmission are both overheating.

An overheating engine can be controlled by a working fan or even a semi-working fan, but, an overheating fan is much harder to control because its outlets to the cooling system are much more restricted.

At this point, I don’t think you will need a replacement transmission, but, and it is a big but, it is possible that the transmission has overheated to the point where not only has the fluid burned up and become contaminated to the point where it has lost both its lubricating and cooling properties, so it is little more than an organic mess, but it is also damaging the transmission. I don’t think it is too late to turn things around, but you will have to replace the thermostatic switch as quickly as possible so you can restore cooling to not only your engne but also your transmission. Both rely on the radiator/cooling system to work correctly.