Quick check-in on the new AC system. First off, I wasn't sure what to fill the heater core firewall gap with. As mentioned I was considering duct seal, and that is what I ended up using:
On paper it's the perfect material; inert, holds its shape under high temp. It stays RATHER malleable due to the high temps but at the same time stays put. Perhaps not the most optimal solution but definitely cheap and easy.
Beyond that AC is working great, I leave the truck in AUTO all the time and it does what it is supposed to.
The only issue so far is that it seems to be excessively cycling. About twice per minute. From some reading this can be caused by a bad thermistor (a part I regretted not replacing but is apparently doable without pulling the dash, so that's good. Not sure if the issue warrants further exploration or not. Probably just leave it alone for the time being. Like I said, it works perfectly, just seems to cycle more than expected.
On paper it's the perfect material; inert, holds its shape under high temp. It stays RATHER malleable due to the high temps but at the same time stays put. Perhaps not the most optimal solution but definitely cheap and easy.
Beyond that AC is working great, I leave the truck in AUTO all the time and it does what it is supposed to.
The only issue so far is that it seems to be excessively cycling. About twice per minute. From some reading this can be caused by a bad thermistor (a part I regretted not replacing but is apparently doable without pulling the dash, so that's good. Not sure if the issue warrants further exploration or not. Probably just leave it alone for the time being. Like I said, it works perfectly, just seems to cycle more than expected.
