1997 Nissan Altima Heater not working

1997 NISSAN ALTIMA
111,800 MILES • 4 CYL • 4WD • AUTOMATIC
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NOMESHWARARAO
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  • 1 POST
my a/c is working fine when i am putting in the heater it is not working
Dec 9, 2007 at 11:44 AM
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MHPAUTOS
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  • 31,937 POSTS
Hi there,

with engine warm up, check the temp of both heater hoses with the temp on high. If not hot to touch, you may have a blocked heater core or a faulty heater tap. If both hot the venting system flaps could be stuck closed.

mark (mhpautos)
Dec 9, 2007 at 4:10 PM
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STRAILER
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  • 53,855 POSTS
The #1 reason a heater will not work is low on coolant, check out this video which should help.

https://youtu.be/SNRb6pSwYuU?si=hhuW4N24wcjf3YUq

Please go over this guide and get back to us.
Aug 3, 2024 at 6:39 PM
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