Hi, I need help diagnosing an issue with my 2019 Ram 1500 long star
I recently replaced the radiator, radiator fan, and radiator fluid. It was running fine for a few days, but now when I run the A/C, it randomly starts blowing hot air and the temperature gauge spikes significantly. After a few minutes, it cools back down, but the issue keeps coming back off and on.
Can you help me figure out what’s causing this? Could it be an issue with the thermostat, air in the cooling system, or something else?
Thanks!
What makes this problem better or worse?
If i just leave it in park the heat starts to lower slowly.
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Hello, Dave here, contributing to RepairPal and providing expert advice since 2010.
Can you verify that the condenser fan turns on to cool the condenser and vehicle cooling system when needed? That is my first thought.
Even if you've replaced parts, there could be a concern of a command to allow the fan to turn on. It's impossible to know without performing needed testing hands on.
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