Originally Posted by
jcapp
hello fellow crossfire owners
When i first purchased my '04 crossfire the fan speed was regulated by how hot my interior was. Is there an outside air sensor that regulates fan speed when cabin ac is turned on? If yes where is it located to clean or replace? thanks
I've owned three Roasters over 16 years. I've worked on countless climate control modules (owners send them to me to fix the erratic climate control fan speed issue) - and I can tell you, there is no such sensor.
The outside ambient temp sensor feeds the display in the instrument panel.
The IAT sensor measures ambient intake temperature, this is used by the ECU to tune the engine.
There is a heater core temperature sensor (actually two in one, one for each side).
But there is no function in the Crossfire that automatically sets climate control fan speed. Now, the ECU does regulate the engine fan speed based on coolant temperature and status of the A/C clutch.