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No defrost


Heavyd1980

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Ok guys my wife tells me that her car 2003 Nissan Altima 2.5S wont defrost or heat up unless the car is moving down the street. If she stops at a stop sign or in traffic the car will stop blowing hot air?!?:banghead: Anyone have any great ideas on where to start with this problem?:shrug: Thank you for any and all help!

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I googled it & came up with air blocking the heater core... at RPM the water gets forced by it. There is TSB on bleeding the air: http://www.justanswer.com/car/12e0j-i-m-having-problem-2003-nissan-altima-heat.html It might well be the radiator cap return gasket is shot so it is drawing air allowing this to happen. I went nuts with dear daughter's Pontiac Sunbird that had a system that had to be purged.

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  • 2 weeks later...
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sorry about the late response I didnt get an email notification! Thank you for the time and info Flagman!!! I would love to report back that I got it fixed but my wife had a better idea and we traded it in two days ago. So problem fixed i guess!:ahhh:

Ok so you trade the Nissan in so what did you get to replace it? Come on we need to see pictures... :cool:
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