Monday, March 19, 2007 - 03:04 pm, by: Will Adams(Draco)
This has been annoying me for a while, so thought it's about time that I posted it up.
My air-con works perfectly fine and cools/heats as it should. However I have noticed a slight "wooooooo" noise when the car is in drive. I have also noticed that if I take my foot off the accelerator the noise seems to disappear.
To check if this was actually the air-con, I turned off the air-con and the noise disappears. Turn it on and you can hear it again. It's in the background and just audible enough to annoy me. It seems to happen with any setting where the a/c is set to 24 degrees or lower.
Another thing is that I have noticed that sometimes on the outside of the car I can hear a clatter noise every now and then. Would this be bearing related?
Tuesday, March 20, 2007 - 01:26 pm, by: Will Adams(Draco)
All the vents are open. It's not an inside noise and is definately coming from the engine. It's as though when revving the engine it kind of seem to strain the a/c when it is on and cooling.
The clatter noise happens now and then whenever the a/c kicks in.
Brian Timms TryHard New South Wales TT Soarer Goodness.
Tuesday, March 20, 2007 - 01:49 pm, by: Brian Timms(Turbo_brian)
I am suprised this hasn't been said yet...
If it's only happening when the setting is UNDER 24 degrees, there is a good chance this is the threashold where the A/C compressor is kicking in to cool the air, and anything ABOVE 24 degrees, the A/C compressor is not required, therefore doesn't kick in.
This would be logical if the wooooing noise is said to be coming from under the bonnet, and not inside the cabin.
Something I have noticed as well on mine is fan speed seems to be effected by the speed of the engine.
It doesn't bother me, but I do notice the fan speed slow slightly when pulling up at traffic lights, and I also notice it blast again after I take off.
Tuesday, March 20, 2007 - 10:22 pm, by: Dave Rose(Sand_groper)
WILL....just a shot in the dark try removing aircon belt and reverse it ...but the clatter sounds like it could be elec clutch??? maybe the fan speed is the volt drop at tick over
Roger Costello TryHard WA UZZ31 V8 Limited, UZZ32 no 867
Wednesday, March 21, 2007 - 01:40 pm, by: Roger Costello(Roger)
I think Dave is on the right track. Try some rubber grease (the red stuff - Repco) on both sides of the AC belt. Don't use anything else as it wont work and will probably stuff the belt. Rub a decent 10 cm smear over a few spots and very briefly turn the engine over four or five times without starting it to distribute the rubber grease around the belt. I have seen this "cure" a compressor that I'd have sworn was stuffed and on other 1UZFE's fix moans and funny noises. For some reason the ac belt when it's dry can make a real racket under load. It will need doing every 10-15,000 kms. This trick also works on some front loading washing machines!
Wednesday, March 21, 2007 - 06:31 pm, by: Roger Costello(Roger)
I'd recommend it, it takes about 3 minutes once you have the rubber grease and it's an instant fix if that's the problem. I would not have believed it was the belt making the noise until a friend who's a Lexus service manager showed me. The belt had been replaced about 15K prior and looked like new.
It sounded exactly (to me, + a local experienced Soarer mechanic and another auto electrician) like a compressor about to die. I had tried to order one except there are none in Japan for late 95 UZZ32's. We had changed bearings and listened with stethoscopes and "proven" to ourselves it was the compressor! Now it is so quiet I can't tell if the AC is on or off whereas before It was much louder than the engine.
It saved me $1000, let us know how you go.
Neil Griffiths Trader NSW 212Kw @ 8psi MANUAL Super Charged UZZ31
Wednesday, March 21, 2007 - 07:32 pm, by: Roger Costello(Roger)
Neil
That would sound expensive, and major grief to replace if it was the bearing. I guess given the blower can load the belt about 10 times as much as an ac compressor six months is doing well. Have you ever seen the bearings on the little Toyota superchargers on JDM MR2's. I think it was a 4AGZE, you have to shatter a plastic bit to get the old bearing out and I never found a replacement in the parts catalog. It was in a yellow Corolla shopping trolly disguised as stock with steel wheels and baby on board sticker. With the right pulley on the blower most of the driving was done via the driver or passengers window as too much sideways had been fitted. Ahh memories.....
Neil Griffiths Trader NSW 212Kw @ 8psi MANUAL Super Charged UZZ31
Wednesday, March 21, 2007 - 08:10 pm, by: Neil Griffiths(Aussiesc)
I had a Corolla lik ethat as well..hahahah
Ugly white AE82 with dirty stock interior.. BUT, I had about 117Kw at the front wheels..hehehehehe And an LSD Trans in it..Talk about Axle Tramp There was that much torque going into this poor little car, I had to have a wheel alignment every 6 months
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