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Heating & Cooling 2nd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 01-23-2014, 11:25 PM
Jetjockey Jetjockey is offline
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Default 97 Ram Heat problem

Hello fellow Ram owners,
I am new to this forum. Hope some genius's out there in cyber land have a solution to my problem. I have a 97 Laramie with 317,000 mi. 5.9L engine, 4x4. Very little heat. Have installed new radiator and thermostat today (1-23-2014). Water pump was replaced in Jan. 2013. Heater core has been flushed, back flushed a week ago. The top radiator hose is hot, but the lower hose is cold. Temp gauge shows normal temp. I am thinking the engine block is clogged. Am I headed in the right direction? I think the pump is OK as I don't hear any noise from it. Any thoughts on using vinegar to flush the block or any commercial flush products to use? Kind of at the end of the line as to what is causing this problem. Sure would like to have some heat in this zero degree weather we are having. Thanks in advance for any help or info. Jay
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Old 01-24-2014, 05:22 AM
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slimpartywagon slimpartywagon is offline
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Take out the thermostat and put the housing back on. Then remove the hear hose, and flush out the whole system.. the water should come back out through the thermostat housing. once the water flows back out clean in that direction, back flush the opposite direction... repeat the process several times and see if that does the trick. If not, you need to do a pressure test on the cooling system to make sure there aren't any leaks. even a tiny pin hole can cause the engine no tot get up to temperature along with a fualty radiator cap.
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Old 01-24-2014, 11:15 AM
Jetjockey Jetjockey is offline
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Default 97 Ram heat problem

Slimpartywagon, Thank you so much for your quick reply. Sounds like a plan to me. I'll load up on thermostat gaskets. Just wish it wasn't such a pain to get to the thermostat! I'll post the results of the endeavor. Hopefully I can get to it tomorrow. Thanks again Slim. Jay
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Old 01-24-2014, 11:32 AM
Warlock III Warlock III is offline
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You might want to try a hotter thermostat instead of putting the old one back in.

Drop in into a pot of simmering water to make sure it opens before you install it.
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Old 01-25-2014, 02:26 PM
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slimpartywagon slimpartywagon is offline
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No need for Thermostat gaskets for the flush, just use a cereal box or manila folder. since you wont be running the engine, it won't hurt any thing.. but then again, I use manila folders and cereal boxes 90% of the time any way.
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Old 02-05-2014, 07:45 PM
Mudmower Mudmower is offline
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What's up fellas I just joined this site but I'm a long time dodge owner I currently have a 96 ram 1500 short bed with an 8 inch lift and 36" tires I did a tone of work to it it's runs and drives great but my heat doesn't work the dial dose t turn I've narrowed it down to what I was told is a flap at the end of the cable I was told that when u move the dial from hot to cold it just opens and closes a door. I have taken the hole dash apart and can't get to the end of the cable I think there is a mouse nest in the way blocking it because when I bought the truck there was some remnince blowing trough the vent but again I can't get to it to clean it was wondering if someone could lead me in the right direction?
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Old 02-06-2014, 12:23 PM
Warlock III Warlock III is offline
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Did you physically pull the heater control switch out of the dash when you pulled the whole dash apart and traced the "cable"? If there's rodent urine on the cable and it seeped through there's a good possibility that it's seized. Some WD-40 or other penetrate will work through with a little flexing of the cable (along the entire length). But don't force the dial.

I was pretty sure it was operated by wire in a '96.
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Old 02-06-2014, 12:36 PM
Mudmower Mudmower is offline
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Yes I pulled the switch out I can move it a little but it won't open all the way to turn the heat on it pushes the cable in it pulled out fine a/c works great but I just moved to New Hampshire and would like some heat. So I did get the cable to move and the air got warm but it not enuf to heat the cab I try ex to follow the cable but it goes behind the duct work not sure how to get to it.
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Old 02-06-2014, 12:48 PM
Warlock III Warlock III is offline
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It's difficult without removing the heater box but gravity is on your side. Just coat the cable as best as you can and keep working it.
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Old 02-07-2014, 11:23 AM
Mudmower Mudmower is offline
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Thank bro I'll give it a try hopefully it works f not I'll be taking the air bow out
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