GM Truck Club Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
22 Posts
Discussion Starter #1
What up guys....So I have a 2002 Chevy Silverado 5.3L.and I having over heating problems....but just when the truck isn't in motion and when the a/c is on....but when the a/c isn't on it's fine no over heating....also ive notice when the truck isn't in motion the a/c isn't cold its hot...mmmm well warm I would say then when the truck is in motion then the a/c is cold why is that?what's wrong with it?how can I fix it?Help please.
 

·
Registered
Joined
·
4 Posts
I am no expert, but just speaking to the physics of the issue it is simply an air flow problem. When not in motion there is not enough air moving past the AC cooler to properly cool the refrigerant. This also causes additional heat to remain near the vehicles radiator, not to mention the added load the AC contributes to the engine. How to fix it? Just don't stop, drive fast :)
 

·
Moderator
Joined
·
1,536 Posts
Along the lines of johnsonfarms comment, two things I'd first check: 1) anything obstructing airflow through the radiator (leaves, dirt, bugs, etc.) and 2) fan clutch could be worn.
 

·
Registered
Joined
·
7,291 Posts
X2 what MrShorty said.
 

·
Registered
Joined
·
8,623 Posts
When you're cleaning your AC condenser & radiator of the bugs & dirt, be sure & wash them out from the rear to the front. They went in the front, so that's the way they have to come out. If you just spray them from the front, you will just wedge them farther in & you'll never get them out. Mix some soapy water in a spray bottle & spay the condenser & rad & let it sit for 30 minutes. Then take the garden hose & wash them out from the rear foreward.
 
1 - 5 of 5 Posts
Top