Quote:
Originally Posted by TerryB
I've got a 2004 Nissan Altima that appears to have heat circulation problems. Going down the highway, the heater works great... but, once you idle down below 30mph the heat vents cool down and by the time you come to a stop it is blowing cold air? Also, if you start the car to warm it up, the engine temp warms up but the heater only blows cold air at idle. Any ideas?
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Take a look at the Technical Service Bulletin on
http://x.nissanhelp.com/forums/Knowledgebase/links/261
Select:
NTB02-047c
2002–2006 NISSAN ALTIMA; POOR HEATER PERFORMANCE
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