04 sedan heater only works above 2000rpm

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Feb 2, 2011 | 02:47 AM

devin7632

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From: Sacramento

04 sedan heater only works above 2000rpm

hi i have an 04 g35 sedan and the heater only blows hot air above 2000rpm. when the car is at idle it blows freezing cold air. when i am on the freeway it blows hot air. please help

Feb 2, 2011 | 08:35 AM

drkay

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From: Calgary, AB, Canada

I had the same problem. I had let the coolant level go too low and air got into the system. Check the coolant level in the overflow reservoir.

Last edited by drkay; Feb 2, 2011 at 03:14 PM.

Feb 2, 2011 | 10:10 AM

thescreensavers

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From: WPB

^ +1

you possibly have air in the system

Feb 3, 2011 | 11:56 PM

devin7632

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ok i put coolant in today and it was really low. but my heater still doesn't work at low rpms. i think i may have air in the system. how do i get this air out? please help

Feb 4, 2011 | 01:09 AM

drkay

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How low was the fluid? My reservoir was actually bone dry and a lot of air got in. So much that I actually had to fill it to max a couple of times after the car cooling down before the heater began to work normally.

Feb 4, 2011 | 01:25 AM

thescreensavers

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From: WPB

There is a screw in the back that is used to get the air out, its next to the ATF dipstick. Next to the battery compartment.

I am not sure how to do it, Search around.