How did you make out with your other checks and maintenance? Water pump and thermostat both check out? Did the coolant look okay? Not gelled up?Hi all,
My car is overheating slowly in start stop traffic and it makes me wonder if my fans are actually going into high speed mode...
When i turn on the AC, both fan spins. Fan is pretty loud... does that mean its in high speed mode ?
I got the following changed,How did you make out with your other checks and maintenance? Water pump and thermostat both check out? Did the coolant look okay? Not gelled up?
When you re-bled the system did you use a device like the airlift?
Hmm interesting... say in the morning, when i switch on the AC only 1 fan is turned on (i can see because its top mounted), when it gets to 85C/185F both fans come on. However, Im not sure if the fans are on low or high speed, both fans are spinningLotus Radiator fans – Operation
The cooling fans are switched as a pair, and will operate at half speed (connected in series) when coolant temperature reaches 98°C (208°F) on rise, and switch off at 94°C (202°F) on fall.
Both fans will also operate at half speed irrespective of coolant temperature if the a.c. is switched on and the compressor is running, or if the engine management system detects a fault with the inlet air temperature or coolant temperature circuits.
If coolant temperature rises to 103°C (217°F), both fans will switch to full speed (connected in parallel), reverting to half speed at 98°C (208°F) on fall.
This is the right question. Fans aren’t bad but continuing past 210F with them on while stationary is. So many people freak out about 200F it’s like there isn’t a user manual…
Sounds exactly like air in the lines. Try re-bleeding a couple times. Even with a vacuum bleeder it takes me several drives with bleeding each time to get all the air outYes my exact sentiments... both fans are on once temp reaches 85C/185F, but it has trouble stablising the temperature and it keeps going up north till 225F...
Im not even pushing the car. With AC on and normal city driving.
Let me try this ! and report back.Can also park on a steep angle, nose down which should push air back to the engine. Dont tighten the overflow reservoir cap so the system can burp itself.
Also, I am sure the engine sensor which monitors temperature for computer and dash is ceramic (organic), so it has a limited life.