Fan Operation Question - Not Temp Question
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,340
Likes: 35
From: Folsom Lake CA
Fan Operation Question - Not Temp Question
I just wanted some clarification on the way the fans operate. I heard that under a certain vehicle speed they come on based on your temp settings. Is that true? In other words, regardless of the temp settings, do they turn themselves off at a certain vehicle speed?
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Originally Posted by MrLeadFoot
I just wanted some clarification on the way the fans operate. I heard that under a certain vehicle speed they come on based on your temp settings. Is that true? In other words, regardless of the temp settings, do they turn themselves off at a certain vehicle speed?
Phil
Le Mans Master
Joined: Apr 2000
Posts: 6,760
Likes: 0
From: Southeast Nebraska
Cruise-In II Veteran
Originally Posted by RoadRebel
The only fan controls are based on engine coolant temp. The only other condition is defrost/A/C..
Phil
Phil
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
These are the stock programing commands :
Depends on the model year...
For later model years:
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is 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 fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
Depends on the model year...
For later model years:
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is 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 fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 2,340
Likes: 35
From: Folsom Lake CA
Originally Posted by Evil-Twin
These are the stock programing commands :
Depends on the model year...
For later model years:
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is 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 fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
Depends on the model year...
For later model years:
The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is 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 fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
For early model years:
Low speed fans come on at 219,high speed fans come on at 228,low speed with a/c on...
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by MrLeadFoot
Thanks for the post. So, I guess if my car's running at 178, and my 1st fan is set to come on at 178, then the 1st fan will stay on even at 100mph? Is there a disadvantage to that?
if your car is running at 100 mph and your coolant is at 178, because of your stat, yes your fans will stay on..
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by MrLeadFoot
Thanks for the post. So, I guess if my car's running at 178, and my 1st fan is set to come on at 178, then the 1st fan will stay on even at 100mph? Is there a disadvantage to that?
if your car is running at 100 mph and your coolant is at 178, because of your stat, yes your fans will stay on.. if set to come on at 178. with a 178 stat your fans should be set to come on at 190 and off at 183
