Heat issue with my 2003 hemi ram - Hemi Truck Club
 
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Old 12-13-2018, 12:18 AM   #1
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Heat issue with my 2003 hemi ram

I have perfect heat on the passenger side and non on the driver side. Both heater hoses for the heater core are equally hot so I'm assuming that's fine. From the research I've done it sounds like even the trucks that DONT have dual climate control, still use the same blend door set up under the dash and it sounds like that is a common problem. I'm being told that I can get to that stuff through the glove box and the bezels for the radio and the heater but I havent had a chance to RIP into it yet. I have to assume right now that it's probably either a blend door issue or blend door actuator issue. Any other ideas? Suggestions?

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Old 12-13-2018, 05:04 PM   #2
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If you don’t have dual heat the door will be one piece. The doors are known to break in the middle and leave you with one side working one not. The foam is also very common to come apart and make a big air leak allowing cool air around instead of heat. Another thing could be the one side of the heater core is restricted that getting no heat as it’s a flow down and back style core. One row may be working but rest could be plugged up. Do both sides get same temp cold air if so door is fine.
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Old 12-13-2018, 05:15 PM   #3
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I havent tried cold air yet. I will tomorrow. But it's cold.....really cold here in Ohio....lol

If my heater core was plugged would I still have equally hot hoses going in and out of it?
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Old 12-13-2018, 09:20 PM   #4
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To a point yes it could be.
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Old 12-14-2018, 04:25 AM   #5
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Well I tried my AC this morning. It SEEMS like it's coming out of all the forward vents but it was also 35 this morning so I really couldn't tell....lol...its supposed to be in the 50's this weekend so I'll try it again. I'm fairly certain I have a blend door or actuator issue. I'm just hoping I dont have to do the heater core too...lol
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Old 12-14-2018, 04:26 AM   #6
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On the bright side I dont smell antifreeze and I dont have any leaking in the cab or engine compartment
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Old 12-16-2018, 04:44 PM   #7
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So I tried my AC and it SEEMS to be working on both sides which is a little bit confusing from the little bit I know about HVAC. I guess maybe I have a heater core issue.

However, a few months ago I had a loud noise in my blower fan and when I took it out I found a small threaded plastic piece that looked like it had a screw through it and i wonder if it's from my blend door but if i have AC on both sides then I assume my blend door must be working or at least partially working
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Old 12-17-2018, 07:20 PM   #8
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I am betting your blend door is broken. It's easy to get to it, just drop the blower motor/fan out, reach up into the housing, you will be able to touch the blend door. The door should be solidly mounted. The part you found probably came off the end of the blend door where it attaches to the actuator.
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Old 12-18-2018, 04:26 AM   #9
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Quote:
Originally Posted by SUPER BEE View Post
I am betting your blend door is broken. It's easy to get to it, just drop the blower motor/fan out, reach up into the housing, you will be able to touch the blend door. The door should be solidly mounted. The part you found probably came off the end of the blend door where it attaches to the actuator.
I'm fairly certain the blend door is an issue. I'm just hoping it's not a heater core too
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