Specific overheating problem, please help!
Safety Car
Joined: Jul 2010
Posts: 3,929
Likes: 386
From: Chandler AZ
Both fans come on at low speed or high speed. As for as temps this is a quote from Evil Twin
FYI:
Depending on the model year...
For later model years:01-04
The low speed cooling fans are commanded on when the coolant temperature reaches 108°C (226°F). They are turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fans are commanded on when the coolant temperature reaches 113°C (235°F). They are turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fans will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:97-00
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
FYI:
Depending on the model year...
For later model years:01-04
The low speed cooling fans are commanded on when the coolant temperature reaches 108°C (226°F). They are turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fans are commanded on when the coolant temperature reaches 113°C (235°F). They are turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fans will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:97-00
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
I've watched the digital temp read out and see/hear the fans come on at 226.
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
As mentioned above, in a C5, fans can run in Low or High Speed Modes, but in each case, both fans are supposed to run at the same time and at the same speed.
In Low Speed Mode fans are wired in series, with half the voltage applied to each one. In High Speed Mode they are wired in parallel, with full voltage to each one.
-Low Speed Mode (Series):
-High Speed Mode (Parallel):
