I've got next to no heat inside truck wants to overheat

Asked by GuruCZQ1M Feb 09, 2019 at 12:57 PM about the 2000 Dodge Dakota SLT Club Cab RWD

Question type: Maintenance & Repair

So my truck runs at normal temp when driving but blows hardly any heat
blows cold when idling and when idling wants to overheat slowly if I give it
gas even at standstill goes back down to normal running temperature

1 Answer
27,670

oilyspill answered 5 years ago

When the rpms increase, the water pump speeds up and so does the coolant flow. The rpms go down, the water pump slows down. On a warm engine, are the heater hoses hot? You may have to check circulation through heater core. Another thought, maybe a problem with temp door, under the dash?

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