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Old 01-18-2012, 07:06 PM
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Better heat

In my truck, something's wrong with the heat. Whenever I'm driving the truck down the road the temperature seemed fine, but when I slow down or come to a stop the temp just drops off. Now today, the heater was just blowing cold air the whole time, and it didnt help that it was 10 degrees. Does anyone know what the problem is? I know it's probably something stupid that I have to refill but right now I really don't know.
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Old 01-18-2012, 07:10 PM
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Could be water pump or thermostat. Can you monitor the ECTs?
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Old 01-18-2012, 07:10 PM
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Sounds like it could be an issue with your heater core or the water valve that controls the flow of coolant through the heater core.
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Old 01-18-2012, 07:26 PM
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Quote:
Originally Posted by jesilvas View Post
Could be water pump or thermostat. Can you monitor the ECTs?
Nope. Funds are short at my place so I haven't bought a monitoring system yet.
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Old 01-20-2012, 05:40 PM
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Had the same problem.

First, top off your coolant, as a matter of fact, top it way up and run the truck for a while at idle with the top off the degas bottle this should help purge any trapped air in the heater core.

If funds are tight, for now do a high idle mod, that will at least help you defrost first thing in the morning. You can do this for about five bucks.

If neither one of those help, then change the thermostat.

If none of those help take off the water pump and inspect it to make sure the shaft isn't stripped and the blades are good.

After that, you are going to want to pressure test to figure out if headstuds are next on the list.

For now focus on topping off coolant, doing high idle mod, and after all that, changing thermostat.
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Old 01-20-2012, 07:20 PM
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check coolant level fill to min line DO NOT OVER FILL
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Old 01-28-2012, 12:18 PM
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mine did exact same thing I think from what it sounds anyways. If at stop light cold air would blow give it fuel at about 2,000 rpm and she was hot again. ECT was around 182* so I was stumped someone had told me as mentioned above take cap off let run for bit so did and coolant level went down so topped it off and since did that over a month ago not had an issue. I had mods done and never ran heat since had mods so think that was why it was a little low. Maybe try that if this is what yours is doing.
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Old 01-31-2012, 11:11 AM
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What is the high idle mod?
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Old 01-31-2012, 11:43 AM
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thinking he is meaning whats also known as hooking the pto up to a switch I am sure there are detailed info in here how to do it I hooked mine up to my upfitter switches so #4 switch turns mine on.
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Old 01-31-2012, 11:44 AM
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do know year of truck matters as far as hooking up I done one on a 04 and my 05 both was different to hook up. I think 04 was harder than my 05 if remember correct.
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