Have a 2000 Jeep Grand Cherokee, the heat works blowing out of vent but when I turn it to cold it barely blows anything out

Asked by GuruLM83Z Apr 30, 2019 at 09:55 AM

Question type: Maintenance & Repair

1 Answer

89,505

The ductwork has blend doors that move to get the temperature to the vent where you want it. The blend door that throttles hot/cold is sticking because the door actuator is defective. You may have noticed a tapping sound under the dash from a defective actuator. Try a spray lubricant on the actuator, or remove it to see if there's a broken sprocket. Might need replacing. It's not a difficult fix.

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