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  #1  
Old 04-06-2010, 11:34 PM
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Legion76 Legion76 is offline
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Default Leak from heater hose inlet

So, I have a 99 Ram w/ a 360. I replaced the radiator a couple of weeks ago, but have another coolant leak that came up about the same time. I know where it's coming from, where the heater hose goes into the engine next to the top radiator hose. The leaking is only really bad when the heat is running, which is not an issue in hot ass GA right now, but I need to fix it. I've searched the site, but couldn't find what I'm looking for. Before I tear into it, what is the heater hose connected to? Is it just a simple inlet I can replace, or is more extensive than that. I appreciate any help. Thanks, Gary
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Old 04-07-2010, 01:39 PM
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deanthecrabman deanthecrabman is offline
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Are you sure the hose is OK? Might want to try cutting the end off the hose and reattaching it if you have enough slack. Unfortunately, the hose is attached to the heater core, so if the nipple is leaking, you need a new core.
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Old 04-08-2010, 12:43 AM
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It's not leaking from the firewall, but at the engine where the heater hose goes in. The heater hoses are only about a year old. I just don't know if the heater hose inlet and the thermostat housing are the same piece. I'm just trying to find as much info on it before I start taking it apart as it's hard to get a good look in that area. I can't seem to find any diagrams on it. Does this site have FSM's available?
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Old 04-08-2010, 12:52 AM
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the same thing happened to me. the heater core was shot because of my radiator. aparently it happents a lot to 98-01's.
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Old 04-08-2010, 01:26 PM
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deanthecrabman deanthecrabman is offline
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Could a water outlet be what you're looking for?

http://shop.advanceautoparts.com/web...g*Water+Outlet
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Old 04-09-2010, 01:43 AM
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The water outlet could be the thing I'm looking for. I was looking over the spot tonight before I changed out my steering gear box. I saw coolant in the area, but still can't see where it's coming from. I'm probably just going to tear it down and replace the water outlet and thermostat housing. The trucks has 195k miles on it, so couldn't hurt.
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Old 04-09-2010, 03:56 PM
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Hope that's all it is, should be fairly easy and cheap. Had a coolant leak on an Exploder, thought it was the water inlet, turned out to be an intake manifold gasket. At 160K miles, it got a valve job. Good luck, and let us know how it turns out.
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Old 04-09-2010, 09:57 PM
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That's exactly what I'm hoping it's not, the intake or head gasket. I already have my car torn apart and rebuilding the engine and transmission, I don't need to truck to go down right now. Too much money going out and not enough time to get everything back together.
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Old 04-09-2010, 10:02 PM
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I hear ya! Couple years ago, had both vehicles needing head gaskets. Babied one along until I got the other fixed.
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Old 04-14-2010, 12:07 AM
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So it seemed to have been the heater hose inlet leaking. Replaced it and went ahead and changed the thermostat and put a new gasket on. But, in the process, I think I damaged my coolant temp sensor, there's a crack along the bottom. I was hoping would work until tomorrow, as the parts stores are closed. It runs, but seems to be in limp mode. No acceleration. But, on the bright side, I didn't see any coolant leaking anymore.
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