why does my heater only work while im driving, and not while idling

2005 INFINITI G35
60,000 MILES
Avatar
THOMAS.PETERS
  • MEMBER
  • 1 POST
i live in alaska, and ive noticed that my heater doesnt work while the car is idling in the parking lot, but if i bring the RPMs up, itll work. it also works while im driving, but just not after it drops down past a certain RPM.

any answers?
Sep 10, 2011 at 11:55 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Confirm that the cooling system is full. If it is, I would recommend flushing the heater core. It may be partially plugged and only allowing coolant to pass through when the RPM's are higher and there is more pressure from the water pump.
Sep 11, 2011 at 10:34 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.