C5 Overheating!
Safety Car
Joined: Mar 2006
Posts: 4,554
Likes: 35
From: Godfrey IL
All good advice. The biggest culprit is the crap up in the radiator.
This is the first vehicle I've ever had that deposits bugs on the garage floor regularly.
They fall from the very top of the ac cooling coils as the engine cools down.
You think the spiders would go up there when I get home and have a hot meal.
This is the first vehicle I've ever had that deposits bugs on the garage floor regularly.
They fall from the very top of the ac cooling coils as the engine cools down.
You think the spiders would go up there when I get home and have a hot meal.
Team Owner
Joined: Feb 2003
Posts: 37,329
Likes: 12
From: Plano Texas
CI 6-7-8-9 Veteran
CI-VI Car Show Winner
St. Jude Donor '07-'08-'09-'10-'11-'12-'13
Just a note - there is a debris screen that will eliminate this issue - stull in the rad front (21st Century MC 972 417 7177) 
Our C5's should have a HOOVER sign on the front undercarriage where the rad is located
Our C5's should have a HOOVER sign on the front undercarriage where the rad is located
Safety Car
Joined: Jan 2007
Posts: 4,300
Likes: 6
From: San Antonio Texas
All good advice. The biggest culprit is the crap up in the radiator.
This is the first vehicle I've ever had that deposits bugs on the garage floor regularly.
They fall from the very top of the ac cooling coils as the engine cools down.
You think the spiders would go up there when I get home and have a hot meal.
This is the first vehicle I've ever had that deposits bugs on the garage floor regularly.
They fall from the very top of the ac cooling coils as the engine cools down.
You think the spiders would go up there when I get home and have a hot meal.
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
Racer
Joined: Dec 2006
Posts: 302
Likes: 0
From: Birmingham AL
Drifting
Joined: Jan 2000
Posts: 1,660
Likes: 9
From: Charlotte, NC
You should also check your fluid levels (WHEN COOL) at the radiator. For some reason if your radiator is quite low and you only add water/coolant to the resovoir, it doesn't seem to make it into the radiator. I know this goes against the entire point of the resevoir design, but that has been my experience.
In short, try adding some distilled water directly into the radiator and also check for the debris like everyone else mentioned.
In short, try adding some distilled water directly into the radiator and also check for the debris like everyone else mentioned.
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