C5 cooling fan ops?
Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 6,273
Likes: 14
From: Austin TX
C5 cooling fan ops?
My 99 is running hot and I'm not sure the fans are working properly. Can someone pls explain proper ops (on temp, single vs dual ops, etc) so I can better understand what is or is not working?
Thanks for any help
Thanks for any help
Safety Car
Joined: Nov 2000
Posts: 4,549
Likes: 30
From: Shenandoah Valley Virginia
The Vettes are bottom breathers and pick up a huge amount of garbage in the AC condensor and radiator fins. I clean mine out annually and usually get several handfuls of garbage out. I remove the top radiator shroud and use a 90 deg air nozzle like the one in this link to blow everything out.
http://www.buy.com/prod/mountain-mtn...212940104.html. If you just rely on the hose from the inside, there are large areas that you can't get to because of the fan shroud. You have to do the condensor and the radiator separatly to get it all out.
http://www.buy.com/prod/mountain-mtn...212940104.html. If you just rely on the hose from the inside, there are large areas that you can't get to because of the fan shroud. You have to do the condensor and the radiator separatly to get it all out.
Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 6,273
Likes: 14
From: Austin TX
The Vettes are bottom breathers and pick up a huge amount of garbage in the AC condensor and radiator fins. I clean mine out annually and usually get several handfuls of garbage out. I remove the top radiator shroud and use a 90 deg air nozzle like the one in this link to blow everything out.
http://www.buy.com/prod/mountain-mtn...212940104.html. If you just rely on the hose from the inside, there are large areas that you can't get to because of the fan shroud. You have to do the condensor and the radiator separatly to get it all out.
http://www.buy.com/prod/mountain-mtn...212940104.html. If you just rely on the hose from the inside, there are large areas that you can't get to because of the fan shroud. You have to do the condensor and the radiator separatly to get it all out.
I am the third owner of my 99. The first owner did quite a number of mods including replacing the OE air filter. In order to accommodate the depth of the large KN filter, there is a 10" x 10" cutout in a metal plate that covers the radiator. This cutout includes a piece of shaped sheet metal that drops down about 1" towards the condenser/radiator.
I'm thinking that this is obstructing air flow to the condenser/radiator and driving up temps.
Where can I find a pic of the correct radiator shrouds so that I can compare with mine to see if I can better understand this?
Thanks again.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
Thanks CHJ.
I am the third owner of my 99. The first owner did quite a number of mods including replacing the OE air filter. In order to accommodate the depth of the large KN filter, there is a 10" x 10" cutout in a metal plate that covers the radiator. This cutout includes a piece of shaped sheet metal that drops down about 1" towards the condenser/radiator.
I'm thinking that this is obstructing air flow to the condenser/radiator and driving up temps.
Where can I find a pic of the correct radiator shrouds so that I can compare with mine to see if I can better understand this?
Thanks again.
I am the third owner of my 99. The first owner did quite a number of mods including replacing the OE air filter. In order to accommodate the depth of the large KN filter, there is a 10" x 10" cutout in a metal plate that covers the radiator. This cutout includes a piece of shaped sheet metal that drops down about 1" towards the condenser/radiator.
I'm thinking that this is obstructing air flow to the condenser/radiator and driving up temps.
Where can I find a pic of the correct radiator shrouds so that I can compare with mine to see if I can better understand this?
Thanks again.
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Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 6,273
Likes: 14
From: Austin TX
It's not a scoop - it's more like a depressed square pan. I looked underneath and there is plenty of room between the backside of this depressed pan and the front of the condenser. So that's not the problem.
Thread Starter
Le Mans Master
Joined: Aug 2000
Posts: 6,273
Likes: 14
From: Austin TX
I hosed the front of the condenser, the back of the radiator and the space between as best I could. There was some grass, etc in the radiator but not much.
Is there supposed to be a foam seal between the condenser and Radiator? When I rebuilt the cooling and AC systems on my C3, many recommended sealing the space between the two to insure that air came thru the condenser and did not go around the edges of the condenser to go thru the radiator. Does the same apply to the C5?
My AC works great so apparently the condenser is getting plenty of air now.
Is there supposed to be a foam seal between the condenser and Radiator? When I rebuilt the cooling and AC systems on my C3, many recommended sealing the space between the two to insure that air came thru the condenser and did not go around the edges of the condenser to go thru the radiator. Does the same apply to the C5?
My AC works great so apparently the condenser is getting plenty of air now.