Nissan Repair/Heater doesn't work while idle
I have a 2005 Nissan frontier. I have a remote starter and when I let the engine run idle thee heater doesn't work. But when I dive up the highway it works. When I let off the gas again it doesn't work. Any idea what causes this?
Hi William -
The heater is controlled by engine vacuum. The more RPM's the engine has, the more vacuum -
With that said, I would replace the heater control valve, which should be in line with the heater hose near the firewall. It is probably sticking at low vacuum. I would also check the vacuum hoses related to the valve. Could be kinked or broken.
Hope this helps -