Heat won’t stay hot

Asked by TAPERMIKE815 Apr 03, 2019 at 08:54 AM about the 2002 Dodge RAM 1500 SLT Quad Cab RWD

Question type: Maintenance & Repair

My trucks heat won’t stay hot. I’ve replaced
Hester core thermostat had to replace
radiator and I’ve worked all the air out of the
lines. Idk if it’s a vent in my hvac unit I’m not
sure what else it could be

1 Answer
4,780

jetjurnigan answered 5 years ago

Ya mite also re-check the system for air anyhow. Pull the radiator cap (while cold, of coarse)...let the engine run, keep the idle up and "milk" the upper radiator hose again and again. You mite be surprised how much air can get trapped in a heater core. Pump that puppy good...I've made some qwik easy money off people who swore that they properly bled the coolant system. Not saying this is definitely your problem...however, start with the most simple n obvious.

Mark helpful

Your Answer:

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