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5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

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Old 10-12-2006, 07:36 AM   #1
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my heaters dont work :(

hey guys........my heaters in my car dont work....like it'll only blow COLD air out of the vents....even if i switch it to warm and like it wont blow into my windshield or my floor.....This morning....it was really cold, and my windshiled was FROZEN.....i couldnt do anything about it....because i only had COLD air coming out of the vents...and on top of that i was FREEZING IN MY CAR...i couldnt hold my steerin wheel...and i had to stop in the middle of the road...and clean the windshield with my school ID lol...
but do u guys have any idea what could it be?
fuse?
anything else?
let me know
thanks
huso
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Old 10-12-2006, 07:51 AM   #2
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Auto climate control? Probably the temp sensor. If not, is the engine getting warm?
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Old 10-12-2006, 08:30 AM   #3
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do you have a coolant leak anywhare?
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Old 10-12-2006, 08:38 AM   #4
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Quote:
Originally Posted by jvienneau
Auto climate control? Probably the temp sensor. If not, is the engine getting warm?
if his car is running, his engine will be warm

maybe a relay that opens the vents up to let warm air in from your engine went out

digital or analog climate control?
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Old 10-12-2006, 09:29 AM   #5
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could it be his blower? I say that because my mom's lexus had a bad blower motor and she has dual climate controll and only one side would blow hot air and the other kept blowing cool air.

my car is the same way, but im just gonna let my friend fix it for me, im gonna try and get it fixed this weekend, ill let u know what is wrong with mine.
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Old 10-12-2006, 11:33 AM   #6
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there's a valve that opens up when you set the A/C controls to cold, letting cold air in, and that may be stuck. Look in the FSM for it: www.phatg20.net
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Old 10-12-2006, 02:15 PM   #7
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if it's an auto climate control, replace the "intake temperature sensor" located downstream of the evaporator behind the glove box.

It's a PITA to replace, but the sensor only costs $10 or so...
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Old 10-12-2006, 02:27 PM   #8
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i have an analog climate control......
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Old 10-12-2006, 02:28 PM   #9
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Quote:
Originally Posted by irish44j
if it's an auto climate control, replace the "intake temperature sensor" located downstream of the evaporator behind the glove box.

It's a PITA to replace, but the sensor only costs $10 or so...
josh...where can i get this sensor at?
how hard is it to replace? is it just hard because there is not enough room to work with it?
thx man
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Old 10-12-2006, 03:10 PM   #10
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Quote:
Originally Posted by shift_2kmaxima
josh...where can i get this sensor at?
how hard is it to replace? is it just hard because there is not enough room to work with it?
thx man
I just ordered mine and installed it last night. Thanks to Josh, my air/heat is working normal again. You can get it from Dave Burnette at South Point Nissan for $9.58. The part number is 27723-4P000. I had a situation similar to yours. The air was cold from 65 degrees to 84 degrees. I did have heat on the 85 degree setting, but only that setting and there wasn't any variation of temperature between 65 and 84. Josh was right....it is a pain in the a$$ to change. It took me 1 1/2 hours to change it. Thanks again Josh.

Here is the link to the post where I got my info.
http://forums.maxima.org/showthread.php?t=493928
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Old 10-12-2006, 05:48 PM   #11
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Quote:
Originally Posted by zheka
do you have a coolant leak anywhare?
Agreed - check your coolant level. I've seen two cases where the defrost didn't work and no warm air because the engine had no coolant (one my car, and another a friend's car ).
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Old 10-12-2006, 06:21 PM   #12
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Quote:
Originally Posted by whitemax21
I just ordered mine and installed it last night. Thanks to Josh, my air/heat is working normal again. You can get it from Dave Burnette at South Point Nissan for $9.58. The part number is 27723-4P000. I had a situation similar to yours. The air was cold from 65 degrees to 84 degrees. I did have heat on the 85 degree setting, but only that setting and there wasn't any variation of temperature between 65 and 84. Josh was right....it is a pain in the a$$ to change. It took me 1 1/2 hours to change it. Thanks again Josh.

Here is the link to the post where I got my info.
http://forums.maxima.org/showthread.php?t=493928
no prob...

just as a side note....I think I mentioned I actually cracked part of the bottom of the evap box when trying to get in there....Welll........as it turns out its the part of the box that condensed water drains out of the car....which means that for the week after I did it, whenever I had the A/C on it was draining this water onto my passenger floormat...grr.

nothing some clear silicone and duct tape didn't fix though ghetto....
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Quote:
Originally Posted by Jeff92se
Again Irish the voice of reason in this coversation.
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Old 10-12-2006, 06:35 PM   #13
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I think he has the non automatic climate control. In that case, look under your hood. There should be a heater hose going to the firewall with a valve. Push on that valve one way or the other and see if you get heat now.

If you dont, then coolant isnt going to your heater core.

Make sure you have enough coolant in the system and it's purged of air. If this still doesnt work, check your water pump.
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Old 10-12-2006, 06:54 PM   #14
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Quote:
Originally Posted by PAREDLINE
I think he has the non automatic climate control. In that case, look under your hood. There should be a heater hose going to the firewall with a valve. Push on that valve one way or the other and see if you get heat now.

If you dont, then coolant isnt going to your heater core.

Make sure you have enough coolant in the system and it's purged of air. If this still doesnt work, check your water pump.
Im having the same problem as him.
Hey can you get a pic or give a little better description of where this hose and vaulve are and what they look like? Im not too familair w/ how the ac systems work in cars.

thx

edit: nvm i checked em
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Old 10-13-2006, 06:26 PM   #15
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Sometime it happend that the heater radiator is clogged and need to be flush with pressure.

My 2 cents
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Old 10-14-2006, 03:04 PM   #16
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Hey guys i have 02 maxima and i stated having this problem in my car....when i put heater or ac on fan level 1 or 2 ..it doesn't blow air inside or on windshield but as soon as i put the fan control level to 3 it works fine....i have analog climate control.
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Old 10-14-2006, 03:10 PM   #17
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You need to change the resistor or rheostat. Something with an R. haha. I think it's resistor. Look up the AC/heater fan resistor and thats the part you need to change.
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Old 10-14-2006, 03:24 PM   #18
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where can i find this resistor in my car ?
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Old 10-16-2006, 02:52 PM   #19
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thanks, i found the resistor and replaced it today ..it was $46+tax from nissan dealer...and it fixed the problem .
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Old 10-16-2006, 02:52 PM
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