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redram1500 12-02-2010 04:37 PM

Minimal Heat
Hello all

I have minimal heat in my 1500 5.2L. It's warm enough to tolerate the winter here in Illinois. I wanted to ask though; I sometimes hear some gurgling or water type sound when I turn on the defrost. This doesn't always happen. Not even at regular intervals and its always been far enough apart and for short enough time I haven't bothered looking into it or forget. I don't have a problem with fogging windows or anything so I don't think the heater core is blown. I suppose could be partially clogged.

Any suggestions to look at or ideas as to the cause would be great.

RamTech 12-02-2010 04:43 PM

How's the coolant level and what's the operating temp of the engine? Are both heater hoses getting hot or just warm?

redram1500 12-02-2010 04:46 PM

Coolant level is good, engine temp gets to the 170 180 range and the hoses feel normal. I did put cardboard in front of the radiator which pushed it up to around 200 engine temp and I get a little more warm air, but not much. Also, it takes 20 minutes of 60 MPH to get it up to that 200 temp. I don't have a thermometer to put on the vent, but it isn't near as warm as it should be, maybe 1/3 as hot as it should be.

RamTech 12-02-2010 05:52 PM

Sounds like a stuck open thermostat at this point.

Thetolleyman 12-02-2010 06:29 PM

I agree, a stuck thermostat. There cheap just replace it. The gurgle noise is normal for some vehicles, but could indicate low coolant level, perhaps needs to be bled of air.

RootBeer 12-02-2010 07:28 PM

With a 98 Ram, I'd have to go with the t-stat too. When was the last time it was replaced and the whole cooling system flushed?

redram1500 12-03-2010 11:40 AM

Unsure when it was last flushed as I have only owned for a few months. The coolant looks brand new though, bright green. I'll check the thermostat if I get time. Thanks for the suggestion.

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