Question about 2002 Nissan Altima

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Nissan altima heater does not work - 2002 Nissan Altima

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  • chellif Jan 15, 2009

    My 2002 Nissan Altima heater only works if I got over 35mph. It blows very cold air if I'm at a stop sign or a light. I took it to the dealership and they told me they were 90% sure bleeding the radiator would fix it. It did for a about 4 days. Today it was happening again so back to the dealership. Now they are saying I need 2 new thermostats!! I think they are just guessing at my expense.

  • kartgk Feb 16, 2009

    I have 2002 Altima too sadly. The heater works only if i give gas and cools down on idle. Had the coolant flushing done and thermostat replaced. Seemed to work for a few days, back to cold again.

  • libdra39 Mar 04, 2009

    my 2002 altima blows cool or cold air. does not warm up at all. mechanic said that it was the heat box. he said that he flipped the knob to only blow hot air but it is still cold

  • kathyclaborn May 23, 2009

    my 2002 nissan alitma heater doesn't heat up until you are going down road & we you stop @ red light or sign heater cools off.

  • Christine Kamel May 11, 2010

    I don't know exacly how to fix your problem, but I do know that there is a knob under the wheel that if you turn the heat on then turn the knob you can manually turn on the heat to blow hot. Let me know if this works it does in mine I need a need heater box!

  • Scott  Moore
    Scott Moore May 11, 2010

    is this a blower problem or do you have no hot air?

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I have the same issue. I found that the plastic gear under the stearing wheel is stripped and it automatically rotates to the cold function. Seems like a simple fix but i went to nissan today and of course they want to sell me the whole heater box. its easily accessable to check it out. You can see where the cable comes from your hot/cold knob.

Posted on Jan 17, 2009

  • Deborah Harrell Oct 11, 2010

    Grandson's car was blowing cold air and no heat. I told him about the plastic gear under the dash,on the drivers side, as you suggested. When he reached under there, the gear fail out in his hand!. He got a tool and put in back in since the teeth on the plastic gear was not damaged.THAT FIXED IT. He now has heat for the approaching winter. THANK YOU SO MUCH.

  • lynchc1947
    lynchc1947 Dec 27, 2012

    please can someone give me more detailed instructions one how to locate this switch and what it looks like. i have no idea what i'm doing? do i have to take any panels off?

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I had the same problem with my daughter's 2002 altima. The blower would not blow hot air. The mech. said I needed a new heat box. Thankfully, I got on line. There is a little white plastic gear that is supposted to turn when you switch from cool to hot. It must get stripped easily. Easy to find. look under the dash from drivers side. Turn the hot/cool switch and you'll see it trying to move. You can manually turn it but when you turn the car off it automatically switches back to cold. The nissan guy was very nice. He only had to order the plastic gear. ($8.00). But, I did have to pay to have it put on the car. Some could easily do it themselves. Much better than buying a heat box (400.00 dollars) hope this helps

Posted on Mar 23, 2009

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I had same probelm it was the litte gear in the back where the cable go;s not closing the vent i bet the air works fine check it out at the dealer i bought the gear for $11.00 dollars pout it in myself

Posted on Jun 02, 2009

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If the heat only works while you are giving the car gas, then you most likely need a new heater core and a good flush of the system, Although I have had it fixed 2 times and i am now going on my 3rd time I am not paying for a things because luckily it is being covered - my advise DONT EVER BUY A NISSAN again - i have MORE problems with it then you can believe - and i WILL NOT pay for them to be fixed - I am going to wait until Nissan owns up to it after reading several websites and seeing I am not the only owner that has the same issues...

Posted on Jan 17, 2009

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Same problem - I have a 2003 nissan altima and the heat only gets hot when I am driving. If I am parked the air comes out cold. My husband think it is the thermsalt also.

Posted on Feb 15, 2010

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If problem occurs only @ idle check coolant level (cold). If low inspect for external leaks. If no leaks found you most likely have a slow head gasket leak into one or more cylinders. This is a very common indecent for Altimas and usually the first signs are low heat @ idle followed by misfire when started after cold soak (over night) then overheating problems.

Posted on Aug 27, 2014

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motor1258
  • 6674 Answers

SOURCE: Nissan Altima 02. heater problems

Have you tried asking them to just flush the system, as well as reverse flush? Sometimes that will clean it out enough to get you where it needs to be for now. If not, I'd try that, at another shop, obviously, if for no other reason, a second opinion. Try one that specializes in radiators if there is one in your area. If no luck, and your handy at all, I can tell you what I did to clean core out a few times that worked pretty well for me, and only cost me about $20-$30, and a little time. Let me know if your up to it, but I'd gamble the cost of a flush, and my method, before I'd pay $100's of dollars for new core.

Posted on Dec 22, 2009

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SOURCE: 2003 Nissan Altima Heater Not Working

check ur water level

Posted on Feb 13, 2010

  • 15 Answers

SOURCE: 1995 Nissan Altima Heater contorl valve location

HELLO THE HEATER CONTROL VALVE IS LOCATED AT THE REAR CENTER OF THE ENGINE COMPARTMENT BY THE FIREWALL

Posted on Mar 02, 2009

  • 5 Answers

SOURCE: 97 Nissan Altima AC/heater fan only works on highest setting

Sounds like the blower resistor module needs to be replaced. Could also be the switch.

Posted on Nov 06, 2009

arauzvictor1
  • 466 Answers

SOURCE: THE HEATER ONLY WORK IN POSITION # 4 THEN DON WORK IN 1, 2, OR 3

only it you is employed at the number 4 for which you have the fan bad control amplifer this one serves for the control of the speeds and eta located behind lower right side of dash. Thanks

Posted on Jan 03, 2010

6ya6ya
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Posted on Jan 02, 2017

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