Reprogram Fans 03 Z06?
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
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From: Fort Worth Texas
Reprogram Fans 03 Z06?
How do you reprogram fans to come on sooner on an 03 Z06? I have read many threads on here, and know when they come on stock. My car has a front splitter, and no factory air dam. Would this make it run warmer than usual? I guess I have to find someone with HP tuners? Do I have to change thermostat if I get them reprogrammed to come on sooner? Thanks...
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Answers in Blue
How do you reprogram fans to come on sooner on an 03 Z06?
You'll need tuning software or a device like a diablo predator. Several in the FS section here.
I have read many threads on here, and know when they come on stock. My car has a front splitter, and no factory air dam. Would this make it run warmer than usual?
Almost definitely. Unless your front splitter directs air upwards and through your radiator as you drive like the factory air dam does...
I guess I have to find someone with HP tuners? Do I have to change thermostat if I get them reprogrammed to come on sooner?
You don't HAVE to but you should. One mod compliments the other.
Thanks...
You'll need tuning software or a device like a diablo predator. Several in the FS section here.
I have read many threads on here, and know when they come on stock. My car has a front splitter, and no factory air dam. Would this make it run warmer than usual?
Almost definitely. Unless your front splitter directs air upwards and through your radiator as you drive like the factory air dam does...
I guess I have to find someone with HP tuners? Do I have to change thermostat if I get them reprogrammed to come on sooner?
You don't HAVE to but you should. One mod compliments the other.
Thanks...
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How do you reprogram fans to come on sooner on an 03 Z06? I have read many threads on here, and know when they come on stock. My car has a front splitter, and no factory air dam. Would this make it run warmer than usual? I guess I have to find someone with HP tuners? Do I have to change thermostat if I get them reprogrammed to come on sooner? Thanks...
We have a simple option you might be interested in. Here's a link.
http://forums.corvetteforum.com/c5-g...-corvette.html
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Burning Brakes
Joined: Feb 2006
Posts: 1,085
Likes: 3
From: Ottawa Ontario, Canada
You may want to clean out your radiator as well.
I have an '02 and have visually checked under the nose of the car to make sure there were no plastic bags or leaves clogging the rad many times, and never ever found antything.
I recently had my rad out of the car and HOLY CR@P, the rad was plugged SOLID in front of the fans! It was full of little bits of dust, dirt, and all kinds of other things that were wedged into the fins and could not be seen from below (even though you can see between the rad and AC condenser). I thought the rad was fine even though almost half of it was plugged up!
You can clean the rad by removing the shroud/fan assembly and spraying it with water from behind, then removing the front shroud (beneath the air cleaner) and spraying the AC condenser from the front (go back and forth, front to back, a few times to make sure anything that comes out of the front of the rad doesn't end up in the back of the condenser).
If you're going to replace the thermostat and will have the rad drained anyway, you may want to remove the rad completely as this will allow easier cleaning.
A word of caution: If you're using a very aggressive jet of water make sure you spray the rad fins straight on or you may bend them.
Since cleaning the rad my car runs much cooler. Before, the low speed fan could not keep the coolant temps down... the high speed fans would kick in! Now the low speed fan hauls the coolant temp down with ease. No more listening to the high speed fans wooshing away for no reason, I can't even tell the fans are running now unless I'm watching the coolant temp gauge.
Note, this is all observed with the AC off. With the AC on the fans run all the time.
I have an '02 and have visually checked under the nose of the car to make sure there were no plastic bags or leaves clogging the rad many times, and never ever found antything.
I recently had my rad out of the car and HOLY CR@P, the rad was plugged SOLID in front of the fans! It was full of little bits of dust, dirt, and all kinds of other things that were wedged into the fins and could not be seen from below (even though you can see between the rad and AC condenser). I thought the rad was fine even though almost half of it was plugged up!
You can clean the rad by removing the shroud/fan assembly and spraying it with water from behind, then removing the front shroud (beneath the air cleaner) and spraying the AC condenser from the front (go back and forth, front to back, a few times to make sure anything that comes out of the front of the rad doesn't end up in the back of the condenser).
If you're going to replace the thermostat and will have the rad drained anyway, you may want to remove the rad completely as this will allow easier cleaning.
A word of caution: If you're using a very aggressive jet of water make sure you spray the rad fins straight on or you may bend them.
Since cleaning the rad my car runs much cooler. Before, the low speed fan could not keep the coolant temps down... the high speed fans would kick in! Now the low speed fan hauls the coolant temp down with ease. No more listening to the high speed fans wooshing away for no reason, I can't even tell the fans are running now unless I'm watching the coolant temp gauge.
Note, this is all observed with the AC off. With the AC on the fans run all the time.
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
You will have to have someone with HP Tuners or other tuning program change the on/off settings of the fans. You will have to pay for the license.
We have a simple option you might be interested in. Here's a link.
http://forums.corvetteforum.com/c5-g...-corvette.html
We have a simple option you might be interested in. Here's a link.
http://forums.corvetteforum.com/c5-g...-corvette.html
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
You may want to clean out your radiator as well.
I have an '02 and have visually checked under the nose of the car to make sure there were no plastic bags or leaves clogging the rad many times, and never ever found antything.
I recently had my rad out of the car and HOLY CR@P, the rad was plugged SOLID in front of the fans! It was full of little bits of dust, dirt, and all kinds of other things that were wedged into the fins and could not be seen from below (even though you can see between the rad and AC condenser). I thought the rad was fine even though almost half of it was plugged up!
You can clean the rad by removing the shroud/fan assembly and spraying it with water from behind, then removing the front shroud (beneath the air cleaner) and spraying the AC condenser from the front (go back and forth, front to back, a few times to make sure anything that comes out of the front of the rad doesn't end up in the back of the condenser).
If you're going to replace the thermostat and will have the rad drained anyway, you may want to remove the rad completely as this will allow easier cleaning.
A word of caution: If you're using a very aggressive jet of water make sure you spray the rad fins straight on or you may bend them.
Since cleaning the rad my car runs much cooler. Before, the low speed fan could not keep the coolant temps down... the high speed fans would kick in! Now the low speed fan hauls the coolant temp down with ease. No more listening to the high speed fans wooshing away for no reason, I can't even tell the fans are running now unless I'm watching the coolant temp gauge.
Note, this is all observed with the AC off. With the AC on the fans run all the time.
I have an '02 and have visually checked under the nose of the car to make sure there were no plastic bags or leaves clogging the rad many times, and never ever found antything.
I recently had my rad out of the car and HOLY CR@P, the rad was plugged SOLID in front of the fans! It was full of little bits of dust, dirt, and all kinds of other things that were wedged into the fins and could not be seen from below (even though you can see between the rad and AC condenser). I thought the rad was fine even though almost half of it was plugged up!
You can clean the rad by removing the shroud/fan assembly and spraying it with water from behind, then removing the front shroud (beneath the air cleaner) and spraying the AC condenser from the front (go back and forth, front to back, a few times to make sure anything that comes out of the front of the rad doesn't end up in the back of the condenser).
If you're going to replace the thermostat and will have the rad drained anyway, you may want to remove the rad completely as this will allow easier cleaning.
A word of caution: If you're using a very aggressive jet of water make sure you spray the rad fins straight on or you may bend them.
Since cleaning the rad my car runs much cooler. Before, the low speed fan could not keep the coolant temps down... the high speed fans would kick in! Now the low speed fan hauls the coolant temp down with ease. No more listening to the high speed fans wooshing away for no reason, I can't even tell the fans are running now unless I'm watching the coolant temp gauge.
Note, this is all observed with the AC off. With the AC on the fans run all the time.
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Joined: Jul 2013
Posts: 58
Likes: 1
From: Northern Illinois
I know this thread is 3 years old but... I'd like to lower engine temps when parked or in slow traffic by reprogramming fans to come on sooner. Is there anyone in Chicago/Illinois area that does that?
