Overheating

Chevy Forum Chevy Classifieds Photo Gallery Chevrolet News Search Contact CF Sponsors
Member List Forum FAQ Chevy Timeslips Chevy Recalls TSBs Calendars Register Login

Overheating

Printable Version

Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> S-10 & Blazer >> Overheating

Page: [1]

Message

<< Older Topic Newer Topic >>

Overheating - 8/9/2007 3:39:52 AM

MarineSSgt

Posts: 13
Joined: 1/23/2007
Status: offline

I'm having a problem with my truck overheating when I run the AC lately. I have a 2002 crew cab S-10, 4.3 V6. I checked the charge of my AC, it's right about where it needs to be. I'm not sure what else to look for, as it only overheats when I run the AC. Anybody have any suggestions? These days of driving to and from work everyday not running the AC is starting to get old, especially when we're in the high 90's with high humidity. Thanks!

Post #: 1

RE: Overheating - 8/9/2007 4:48:13 AM

golfer

Posts: 610
Joined: 10/8/2006
Status: offline

First thing is to check the engine cooling fan is turning.

The A/C condenser is located right in front of the vehicles radiator. Since the condenser is emitting heat check to make sure it's clear of any debris as well as the rad. You want to make sure there is an unobstructed air flow through the cooling fins for both. This is a simple and cheap fix that can be done with a garden hose.

Other things like a circulation problem with the water pump or rad , the rad cap not venting properly could also contribute to the problem.

(in reply to MarineSSgt)

Post #: 2

RE: Overheating - 8/9/2007 4:11:29 PM

dragonrpc

Posts: 100
Joined: 4/4/2006
Status: offline

Also check the thermostat to make sure it is even engaging the aux fan at temp - is the temp fluctuating at all without AC?

_____________________________

2007 Mercedes ML 63 /////AMG - 503HP
1983 Ranger 350V Bass Boat - 1992 Johnson 150HP
Sold 1999 Chevy S10 4X4 Blazer - 7" Trailmaster lift - 4.3
Sold 1994 Chevy S10 4X4 Extra Cab Pickup - 4.3
Sold 1967 Chevy Camero - 327

(in reply to golfer)

Post #: 3

RE: Overheating - 8/11/2007 7:33:20 PM

MarineSSgt

Posts: 13
Joined: 1/23/2007
Status: offline

The temperature is not fluctuating at all when the AC is not running. Just when I turn on the AC the engine starts to overheat.

< Message edited by MarineSSgt -- 8/11/2007 7:34:13 PM >

(in reply to dragonrpc)

Post #: 4

RE: Overheating - 8/13/2007 3:26:53 PM

MarineSSgt

Posts: 13
Joined: 1/23/2007
Status: offline

I can run the AC all day long in the driveway, but as soon as I hit the road it starts overheating. Any suggestions?.........all the other ones have checked out okay.

(in reply to MarineSSgt)

Post #: 5