RepairPal is your advocate for car care advice and guidance

Q: heater not working on 2005 Nissan Altima

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the heater only works while the car is in motion, but as soon as I stop at a red light or whatever, it starts blowing cold air. ?????
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
There is a technical service bulletin (TSB) from Nissan regarding this issue. It involves a thorough diagnostic procedure that needs to be followed to help determine the cause of this issue. Here is some of the info below. I would take this to the dealer or a good shop that has access to this TSB and have them check out your car.
Bulletin# NTB02-047c Reference: Date: March 7, 2007
Air from the heater on an Applied Vehicle:
• Takes a long time to warm up after an engine cold start, or
• Output air cools down and is not warm enough while the engine is at idle, or
• Output air is not warm enough at any engine speed
Refer to the DIAGNOSTIC FLOWCHART to determine the course of repair. That course may include all or some of the following:
• Coolant Mixture Inspection procedure
• Coolant Mixture Correction procedure
• Cooling System Bleed Procedure
i had the same problem and it was easily fixed. it seems that the antifreeze/ water ratio must be what the car recommends. I had to much anti freeze. my uncle took some out put some water and the heater started working properly.
Didn't find what you were looking for?