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Ron, ASE Certified Technician
Category: Nissan
Satisfied Customers: 35601
Experience:  34 years of automotive Repair
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I have a 2005 Nissan Sentra and I'm having a problem with my

Customer Question

Hi. I have a 2005 Nissan Sentra and I'm having a problem with my heater. I can leave it running and it will not get warm or defrost. Once I'm out on the highway it starts to heat but when I get back into town it starts blowing cooler air again. What could be causing that?
Submitted: 1 year ago.
Category: Nissan
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

When the heater is not blowing hot, take your hand and place it on the heater hoses at the firewall and see if they are both getting hot. Check this for me and let me know the results.

Customer: replied 1 year ago.
Expert:  Ron replied 1 year ago.

Sounds good, post back if need be and we can work from there. Both hoses need to be nice and hot if you have good slow though the core.