It is very, very difficult to accidently do this. The heat sensor is so obvious that it naturally goes in correctly, without trying hard at all. However, to answer your question, since the heat sensor on the thermostat is not down and feeling the heat correctly, since the water is coming from the radiator in a cool state, and IF you could install the thermostat upside down (backwards), it will sense COOL water and tell your computer (assuming a new car) that the water needs to warm up. Wrong message, hot hot hotter hotter equals ruined engine (saw it in the desert in California), equals no good engine, equals $ $ $ $ $ $.
It will probably overheat. answer= thermostat will not open and will prevent the flow of coolant . which will in turn do damage to your engine
Definitely
Either the thermostat was not the problem, or you put it in backwards.
Yes, you could install it backwards. It definitely would not function correctly.
Shouldn't be able to. If the thermostat is put in backwards, thethermostat housing will interfere with the thermostat. When placed in properly, the housing with install easily.
Most likely the engine will overheat.
It will tell you it can not read the discc
You cannot physically put a clutch disk in backwards unless you force it together. If you do this you will destroy the clutch disc and possibly other clutch components.
pcv valve wont work properly
Did you put the thermostat in backwards? I would check to see where the steam is coming from. I had to change out small hoses for the same problem with mine.
It rotates the other way. Yeah, right. You CANNOT put a flywheel on backwards. It's not physically possible to mate the flywheel with the crankshaft unless it is the correct direction.
When the car is cold the thermostat is closed. When the thermostat is closed the coolant does not circulate or get in to the engine block.