Is the opening temperature of the thermostat irrelevant?
Most engines run slightly above the thermostat’s minimum opening temperature under normal loads. Under high loads, they will run at or above the thermostat’s fully open temperature – in other words, under hard driving, the thermostat’s opening temperature is completely irrelevant.
Where is the thermostat on a 1977 450SL?
PLEASE NOTE: If you have a 1977 450SL, the thermostat is not located in the housing. Instead, it is mounted to the right side of the housing for the top hose adapter you removed. Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure.
What happens to the thermostat during hard driving?
Under high loads, they will run at or above the thermostat’s fully open temperature – in other words, under hard driving, the thermostat’s opening temperature is completely irrelevant. The thermostat can only determine when the cooling system is allowed to start cooling the engine. It sets a floor, not a ceiling on engine temperatures.
What happens when you run a factory thermostat?
Running the factory thermostat will on the other hand ensure that the engine comes up to the designed minimum temperature very quickly. Until the engine is up to temperature, there is no cooling occurring. The factory thermostat will not however change how the engine runs under load because the thermostat will be fully open when under load.
PLEASE NOTE: If you have a 1977 450SL, the thermostat is not located in the housing. Instead, it is mounted to the right side of the housing for the top hose adapter you removed. Look on the right side, just below it. Once the car is cold, begin by removing the cap on the coolant reservoir to release any residual pressure.
Are there any problems wiring a thermostat?
Even the most seasoned people who enjoy DIY may come across problems with wiring a thermostat. The main trouble is dealing with those different colored wires, knowing which one does what and if that wasn’t enough, you also have numbers and letters to deal with.
Where does the white wire go on a thermostat?
White – The white wire is what connects to the (auxiliary) heat on your system. Yellow – The yellow wire connects to your compressor. Green – The green wire connects to the fan. Orange – This wire connects to your heat pump (if you have one).
What should I do if my thermostat gets stuck?
But if your [&thermostat&] gets stuck at all, [&replace&] it. They’re very inexpensive. With basic tools, you [&can&] easily [&replace&] it. It’s better to spend $4-15 on a new one than to buy a new engine.