over heating issues

[Third Gear]

Do you hear the fan going when it gets hot? It should sound kind of wheezy when the fan is fully engaged._x000D_
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Did you try to bleed all the air out of the system? Does the heater put out hot air? The system builds pressure?_x000D_
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With the cap off of the surge

Topic

[hartung345]

How much resistance should the fan clutch when hot and cold. It seams to be working fine because the truck runs at 190 when not towing camper._x000D_
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The heater does put out heat and the system builds pressure.

[college man]

does the truck over heat with out towing the trailer?

[college man]

does the truck over heat with out towing the trailer?

[Third Gear]

This is from my service manual, kind of tedious, but worth a try._x000D_
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http://i7.photobucket.com/albums/y252/S … bleed1.jpg

[hartung345]

The truck is a 1500 ext cab 4×4 and is well within its towing capacity according to the owners manual._x000D_
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Last year the truck pulled the camper fine all year with no issues._x000D_
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Yesterday i was hauling approx

[EricTheCarGuy]

You might start there but don’t forget about the transmission.

[Third Gear]

Eric’s right, an upgraded cooler would be a good idea if the only one you have is the one in the radiator. The extra heat from the transmission and the condenser could be pushing the cooling system over the edge. When it’s hot my fan is very loud at lower

[moparfan]

a tranny cooler would be nothing more then a “band aid” in a situation like this. the lowest rated 2002 chevy 1500 was rated at 7,000lbs you are within that and should not have a issue pulling 7,000 or even much more in my personal experiance. i

[moparfan]

also i want to add a trans temp gauge mite be a good idea to buy for testing now and later use since you are pulling with the truck.

[ytram]

+1 with moparfan. I think thermostat, even if new, or radiator needs took out cleaned and or inspected.

[hartung345]

Bad news etcg

[dreamer2355]

Did you check for coolant circulation issues from a bad pump or a clogged coolant passageway?_x000D_
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[college man]

I’m with dreamer on the clogged passages. the radiator sounds like its not_x000D_
rejecting heat. you seem to have flow because the heater core is acting as_x000D_
a radiator when turned on. drain some coolant down in the radiator and look_x000D_
for heavy calcium deposits

[moparfan]

your not trying to pull in overdrive are you? that would put extra load on engine and tranny. with both over working would create a lot of heat and over heat the truck._x000D_
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[EricTheCarGuy]

Trans cooler man.

[Author]

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