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Idle issues

Dgonzo

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Aug 17, 2025
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Hey guys new to this platform, I have a 2021 ram 1500, 5.7 hemi and whenever im sitting idling for more than 7-9 minutes, the truck starts to want to over heat. Thermostat is new, coolant is full in both reservoir and radiator….if you can provide any feedback that would be great
 
Welcome to the forum. I’m guessing your fans aren’t working? Did you check them? They should be synced to go on depending on your coolant temperature. Good luck with resolving the issue.
 
Hey guys new to this platform, I have a 2021 ram 1500, 5.7 hemi and whenever im sitting idling for more than 7-9 minutes, the truck starts to want to over heat. Thermostat is new, coolant is full in both reservoir and radiator….if you can provide any feedback that would be great
Welcome to the forum. Check your fans,
 
Thanks guys I checked the fans and the fans are working properly, I did find a tiny pinhole size leak in the hose so I replaced that but it’s still having the same issue
 
Hey guys new to this platform, I have a 2021 ram 1500, 5.7 hemi and whenever im sitting idling for more than 7-9 minutes, the truck starts to want to over heat. Thermostat is new, coolant is full in both reservoir and radiator….if you can provide any feedback that would be great
What do you consider "want to overheat"? The fans don't turn on until 220ish degrees. Anything under 230 coolant temp is "normal".
 
Hey guys new to this platform, I have a 2021 ram 1500, 5.7 hemi and whenever im sitting idling for more than 7-9 minutes, the truck starts to want to over heat. Thermostat is new, coolant is full in both reservoir and radiator….if you can provide any feedback that would be great
Did you purge the system?
 

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