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S14Speed997
08-04-2005, 11:00 AM
I was leaving work to pick up lunch, drove about 30 ft, and all of a sudden "phhhssshhh", and my a/c turns off...so i turn the knob to #1, nothing. #2, nothing. #3, nothing. I click on #4, and it comes out full blast, and cold.

does anyone have any clue what the heck happened?? its a 97...


thanks - Eric
ibanezxguy
08-04-2005, 12:03 PM
your switch is gone, the resistors have an open in them.
projectRDM
08-04-2005, 03:14 PM
More likely though the switch is fine, it's the resistor that's blown.
S14Speed997
08-05-2005, 07:23 AM
More likely though the switch is fine, it's the resistor that's blown.
The "phhsssssstttt" sound i heard right after it shut off makes me believe something blew....I am in no way familiar with the a/c unit in my car...of course this happens when its 100 degrees down here
RedlineRacer
08-05-2005, 11:09 AM
yeah, i'd say its the resistor. I had to replace one a few years ago on my car. It was only like $30 from nissan. And it is easy to replace.
fliprayzin240sx
08-06-2005, 03:22 AM
Check your AC lines....ive heard of atleast 5 S14 guys who broke the low pressure AC line rite on the pump *me being one of them*
lilredstiffy
08-06-2005, 07:17 AM
Sounds like the relay for the a/c fan to me...I don't know if they are set up exactly the same between s13 and s14 though.
projectRDM
08-06-2005, 03:30 PM
Check your AC lines....ive heard of atleast 5 S14 guys who broke the low pressure AC line rite on the pump *me being one of them*

But that wouldn't explain the loss of fan speeds, the blower would still work fine if that was the case.
sncs14
08-06-2005, 04:49 PM
Check your AC lines....ive heard of atleast 5 S14 guys who broke the low pressure AC line rite on the pump *me being one of them*

+1 for having had the hose brake on their S14. but it doesn't sound like the hose is the culprit here
Siizzzoooo
08-06-2005, 05:00 PM
its the resister, my 98 has the same problem
Al_S14
08-06-2005, 06:04 PM
Its a Blower Transistor not a resistor if i am not mistaking.
projectRDM
08-07-2005, 10:36 AM
Its a Blower Transistor not a resistor if i am not mistaking.


No, it is not a transistor. The FSM clearly labels it as a RESISTOR.
It's not a relay either like mentioned above, because there is no blower fan relay in the HVAC system.

Honestly, why do people continue to post pointless and incorrect information to a thread about parts that don't even exist when it's already been answered?
AzNCmB
08-07-2005, 10:45 AM
where is the resistor located?
aznpoopy
08-07-2005, 10:58 AM
fan doesn't work, its definitely the resistor.

your a/c is probably still working. here's how to check. turn on the a/c. set the vents to open air and set fan to 4. now drive at 80mph. feel cold air coming out? that means your a/c is working, but your fan simply isn't blowing it out to you.

the resistor everyone is talking about is under the glove compartment behind the fan blower itself. two screws hold it in. it comes in and out almost like a videogame cartridge.
publicenemy137
08-07-2005, 01:22 PM
I was leaving work to pick up lunch, drove about 30 ft, and all of a sudden "phhhssshhh", and my a/c turns off...so i turn the knob to #1, nothing. #2, nothing. #3, nothing. I click on #4, and it comes out full blast, and cold.

does anyone have any clue what the heck happened?? its a 97...


thanks - Eric

I had the exact same problem, i didn't have 1 2 or 3, but 4 worked. It's the blower resistor pack, it's very easy to replace and cheap. I paid $23 I think, you can get it at courtesy nissan. It's in the passenger footwell, just take out two screws to replace. Do a search on here for blower resistor pack, there's a thread that shows you the exact place to replace it.

Once i replaced it, 1 2 and 3 worked again :bigok: