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Nissan Master
1,779 Answers
- Posted on Feb 09, 2010
Re: 2005 nissan altima heater blows cold air when stopped...
Check your coolant level. If it is low, what you describe will happen. Water pump works faster as rpm's increase, managing to get hot coolant to heater core (highway speeds). At idle, pump is not working fast enough to get the coolant to the heater core.
Blows cold air when heater is on
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