What could cause hot air to blow when air conditioner is on for a 2013 Nissan Altima?

60

Asked by Apr 23, 2019 at 08:42 AM about the 2013 Nissan Altima Coupe 2.5 S

Question type: Maintenance & Repair

7 Answers

79,705

First, you could have a defect in the AC system. Have that checked to make sure it's working properly. If it's not the AC itself, in the ductwork there's a blend door that throttles between hot/cold. Yours is probably 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.

2 people found this helpful.
60

Where is the actuator located? I am hoping the compressor hasn't gone out. I am willing to try anything, just had to put a new transmission in it.

1 people found this helpful.
60

I did notice a little ticking noise before this happened.

79,705

Under the dashboard you'll see the HVAC ducts and the blend door actuators look like small boxes; I believe you have three. Operate the climate change and you'll be able to hear them operating. Again, before you start working on this, have your AC checked to make sure it's not just the AC that needs coolant or maybe just a fuse.

1 people found this helpful.
60

Which fuse could it possibly be? I looked at the fuse box and only saw 2 for the blower motor.

1 people found this helpful.
60

Would that also keep the compressor from engaging?

79,705

There's a fuse for the AC unit. don't know which one, but there should be a map to the fuses inside the box cover.

1 people found this helpful.

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