Why are my radiators hot but my heating is off?
Why are my radiators hot but my heating is off?
When a diverter fails or gets blocked with debris, hot water intended for the hot water circuit can get into the radiator circuit. Then the radiators will be hot even though the heat is turned off. You do not have to live with constantly hot radiators.
Why are my coolant fans not turning on?
If both fans operate then it is time to take a look at the pressure transducer. Don’t let this strange name fool you, it is simply a sensor that relays the amount of pressure in the system to the PCM and the PCM decides when to turn on the fans and or compressor clutch.
When does a computer fan turn on and off?
The computer turns the cooling fan on and off when it receives a temperature indication from the coolant temperature sensor. When the temperature exceeds a specific value — usually 215 degrees Fahrenheit — the computer will turn the fan on.
Why is my a / C fan not running when the AC is turned on?
Many people confuse pressure in the system for the system being full. Volume and pressure are two different properties of a gas, which the refrigerant in your A/C system is a gas when it is allowed to escape to the atmosphere. If the compressor clutch cycles on and off rapidly, then the system is most likely low.
Why does my car turn off when the AC is on?
My car has an automatic transmission. With A/C systems, it is important to know in what order things turn on and off. From your description, it sounds as though the compressor clutch is only engaging for a short period of time. This is usually due to a low refrigerant level.
If both fans operate then it is time to take a look at the pressure transducer. Don’t let this strange name fool you, it is simply a sensor that relays the amount of pressure in the system to the PCM and the PCM decides when to turn on the fans and or compressor clutch.
When does the radiator fan turn on in a Grand Caravan?
We have an 08 Grand Caravan SXT with 3.8L engine. When the AC is switched on, the compressor clicks on. HOWEVER, the radiator fan does not turn on with the compressor. The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down.
When does the radiator turn on when the AC is on?
When the AC is switched on, the compressor clicks on. HOWEVER, the radiator fan does not turn on with the compressor. The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. HOWEVER, it is only one speed (a low speed).
When does the Rad fan come on or off?
The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. HOWEVER, it is only one speed (a low speed). When I disconnected the coolant temp sensor and started the engine, the fan came on immediately, and at high speed. It came on even though I didn’t have the AC on.
