RamDiver
Senior Member
- Joined
- Jan 23, 2022
- Posts
- 2,220
- Reaction score
- 3,669
- Location
- Marlborough, Ontario, Canada
- Ram Year
- 2021
- Engine
- Hemi 5.7
So I measured the temperature of the hoses for the heater core close to the block with the truck running after a 30 minute drive on rural highway.
The upper hose, output from the block measured between 154°F and 170°F.
The lower hose, return from heater core measured about 115°F to 135°F.
I also tested the hoses at the firewall and saw a difference between the two of about 10° or 20°F, IIRC.
I had the heater control on Auto, set to about 71°F.
The outside temperature was about 60°F.
I will try to perform the same tests tomorrow with the heat blasting in the cab
.
The upper hose, output from the block measured between 154°F and 170°F.
The lower hose, return from heater core measured about 115°F to 135°F.
I also tested the hoses at the firewall and saw a difference between the two of about 10° or 20°F, IIRC.
I had the heater control on Auto, set to about 71°F.
The outside temperature was about 60°F.
I will try to perform the same tests tomorrow with the heat blasting in the cab
.
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