Jump to content
SAU Community

Recommended Posts

So i went to meet up with some friends yesterday and had the air con on while driving and all was fine. Got to the destination and turned the car off and left it for about 4 hours. Come back outside and turn the car back on and the air con is now blowing hot air and i can hear a whinning sound from behind the passenger side dash that wasn't there before. Does anyone have any idea what it could be? Is the condenser or something behind the dash there?

I had a search aswell but couldn't find anyone that had a whinning sound. Just alot of broken compressors and the like.

any help would be great cheers.

Link to comment
https://www.sau.com.au/forums/topic/210925-r32-gtr-ac-whinning/
Share on other sites

If it's blowing out hot air and making a whining noise, I would say that it's something to do with your motor which controls the hot/cool air (can't remember of the actual name, I keep forgetting :no: ).

Is it stuck on the hot air or can you change it back to cool?

If you left the car for 4 hours on a hot day, then the A/C is going to blow hot air, especially because there is no airflow over the condenser.

Most people, when they have their A/C on, almost always have it set to 'fresh air' instead of recycling the air from the cabin.

When you have the vents set to fresh air the system has to work harder to cool the hot air flowing over the condenser, whereas if you have the air set to recycle then the system is recycling the already cool air thus making the system work a lot more effectively and efficiently.

Your fan speed will also have a bearing on temperatures. The higher the fan speed, the quicker the cycle time, thus, the higher the temps. The lower the fan speed the longer the cycle time, thus, the lower the temps.

As for the whining sound, that is your heater fan. It is located directly behind your glove box. It could just be a build up of crap (from having the system set to 'fresh air') and require a clean out, or it could be on its way out.

Does the system still blow cool air after a period of driving? And does the whining sound increase as you increase the fan speed?

Edited by White GTS-T

thanks for the help guys..

Funny thing is i went back today to check it out and the whinning sound has now gone.. The air does go cool when i set the degrees to 18 and does go hot when the degrees is set accordingly. I also tried the a/c and it definitely isn't warm air anymore but not exactly 'cold'.

Even after driving for 10 minutes the air was still blowing hot and i can't check if the sound increases with the fan speed because the sound has now gone hehe

I always use the recycle when using the a/c and only really keep it on full fan speed to get the cabin cool at the start then turn the fan down.

Anyway ill see how it goes 2moro and post up my results. Thanks again guys

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I used this https://osgiken.com.au/product/os-giken-os-250r-lsd-gear-oil-80w250-1-litre/   shut my nismo 1.5 pro up by heaps…. Not silent though. Gives the car character and personality. It ain’t a carolla. If you want silent, put a quaife in it.
    • It's about the same time for me from Bunnings, or the Fasteners. My big push away from takeaway food, and gluten in general keeps me away from the Bunnings Snags too! Weather up here, I've been out for two walks today in the beautiful sunshine. Had a few little drizzles, and some wind, that honestly, a tin of beans and I could compete on how harsh she blows Thankfully, being this bit inland, we're not getting anything much really. Will probably pick up a bit more when/if Cyclone Alfie decides to come ashore. A few areas in the GC though, and south into NSW are really getting smashed though! Right now, I'm just annoyed Alfie hasn't hit, as I'm not allowed to crack into the BBQ foods like the bacon and eggs until the Cyclone hits "In case we lose power"...
    • I love fastener joints, the price difference between them and joints like Bunnings or Super Cheap is amazing, and they either have exactly what you want, or they can get it to quick They have even given me some for free when I only needed a couple of specific size In saying this, I have paid premium for fasteners from Bunnings if they have the sizes I need, but only for convenience really, as my local is only 10 minutes away, the Sushi joint near them is also a consideration  How's the weather Matt? Stay safe mate
    • Wideband is worth setting up if only for tuning purposes. I would not mess with the ignition system unless there's a misfire. HKS crank trigger is popular out here for the relatively easily sourced Denso crank sensor, not a bad idea to install as well regardless of power level on a standalone. Boost leak test is worth thinking about. Oil pressure sensor tied to a fuel cut isn't a bad idea either. Getting the tune figured out is a good idea. Without putting eyes on it and getting under it there's no way for us to tell you exactly what it needs but most likely you're down to the last 10% that will make a big, big difference in how happy you are with the car.
    • Doing a refresh of my 33 and can see a few websites stating they sell the entire main carpet for our cars, but they all have generic photos which is fine, i understand they are custom made to order.  Just seeing if anyone has got it done or had any experience with this, as i would only want to do it if the fit and finish was as good as oem https://carmatsdirect.com.au/products/moulded-carpet-or-vinyl-for-nissan-skyline-r33-1993-1998-coupe https://knoxautocarpets.com.au/moulded-carpets/nissan/skyline/skyline-r-33-1993-1998/
×
×
  • Create New...