Huh. I could be wrong about the temp. Doesn't seem to matter with the range it has. My v10 ford is 192* and stays within 2* either way, so it's weird to me the range it runs.
Ram Heavy Duty Forum
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2018 ram 2500 6.4 heat issue
- Thread starter Lb30
- Start date
Yea I figure I’ll end up having to have the dealer just tear the dash out of it I’ve tried everything that I know of without tearing the entire dash out with it and still can’t find the problem, sadly it’s been that way since I got it last year and the dealer I bought I from said it was normal for those trucks which I know it’s not they just didn’t want to fix it under the 30 day warranty
D
Deleted member 47449
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Just back flushed our 2016 PW with a Lisle water and air heater core flush tool. Was 120F at the vent. Now 144F at the same vent. Temp stick is in Celsius. Outside temperature was in the 60's before and after, not 90F as displayed. Just the sun was shining onto the driver's mirror thermometer.
When you back flushed did you use air pressure too?
When you back flushed did you use air pressure too?
mwalsh9152
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I just flushed the heater core in my 21 6.4 this weekend. The far left vent was cold, not lukewarm while the passenger side was hot. I used a 110v pump to circulate, and added air from a cobbled together Y fitting. I got a good amount of crap out, and the heat is great now. I'm trying to figure out the best way to filter the coolant, then I will flush again and put the filter in.
Trash Panda
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I’d just get two birds stoned at once, and drain all the existing coolant out, and flush out the block & radiator.
Start with fresh coolant after