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Poor heat output

johnmyster said:
Full flush and Fleet Final Charge Pro. It's also red, but no association to mopar orange/red/purple variants. Mopar shot themselves in the foot when they made red that was kinda like orange, and then a different red that was incompatible with the other red, and then a purple that fades to orange/red, which is kinda like dexcool orange.

Five years, flush and refresh.

View attachment 92210
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I guess it's the inorganic that keeps the old stuff from breaking down??
 
The coolant flush fixed my problem. Thank you for all the support. You guys saved me money, but more importantly saved me having to tear into my dash.

I do wonder if it was the coolant breaking down or sand casting remnants.
 
johanh13 said:
Now I need to find the time to flush mine to see if it fixes it too!
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I ended up getting a local shop to do it for me. He said he had all attachments to make it easy, etc, so I don’t think it was a big deal for them. It would have taken me all day, I’m sure.
 
I just flushed mine, the flow was not impeded at all. I used water then blew it out with air; made no difference on mine ... ARGH
 
johanh13 said:
I googled how to 'recalibrate' and that did not work. It blows air according to the HVAC settings, only it's always cold on the drivers side. Passenger side is warm ....
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When I had the dealer diagnose mine, they used their tool to command each actuator independently and verify they are moving…if you checked that, it seems like it must be a clog. You could try some chemicals to try to break down the deposits….but others here know more than me.
 
Scott64pw said:
When I had the dealer diagnose mine, they used their tool to command each actuator independently and verify they are moving…if you checked that, it seems like it must be a clog. You could try some chemicals to try to break down the deposits….but others here know more than me.
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when I connected my water hose, there was unimpeded flow, then I also used compressed air, both directions... did not seem clogged at all
 
johanh13 said:
when I connected my water hose, there was unimpeded flow, then I also used compressed air, both directions... did not seem clogged at all
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I did notice a small change, the air was barely warm, so I flushed it again. I drained all the coolant, put in about 4 gallons of distilled water, drove it till it was 100% warmed up. Drained it again and refilled with new coolant. Now it's blowing warm air. So it likely is my core....
 
johanh13 said:
I did notice a small change, the air was barely warm, so I flushed it again. I drained all the coolant, put in about 4 gallons of distilled water, drove it till it was 100% warmed up. Drained it again and refilled with new coolant. Now it's blowing warm air. So it likely is my core....
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Awesome news. Based on what others are saying I was thinking that the core only has one inlet and one outlet and parallel paths for the coolant to flow internally. It sounds like it may have some stuck sediment at the bottom. If there was a way to let some chemicals sit in there and then do a flush, it might fix it 100%. Glad it’s working somewhat.
 
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