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Rattling A/C

For all things Electrical.

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Rattling A/C

Post by lowndsie »

Ok, this one is a little hard to describe so let me know if you need anymore info.

The Air Con on the triton has a very annoying rattle in it while it isnt on. Once I turn it on, then it goes all quiet. I pulled apart what I could to see if there was anything lodged in there, but didnt find anything. It seems to be coming from the evaporator? (the radiator grill look alike). I can get the unit fully apart of course so it is possible that something is stuck in there that I cant see. Although I find it strange the rattle stops once the air con is on. I've tried all the different settings on the dash, but they all have the same result. The air con seems to be working fine (cooling wise), but Ive noticed that it does seem to drip more water than any car I've had before.

Any ideas?
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Post by DAZZ »

The core up front is the condenser. The one under the dash is the evaporator. Maybe a slight blockage in the system somewhere, maybe Receiver\ dryer. Or if the rattle is under the dash (evap core), maybe the TX valve or equivalent has a problem.
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Post by lowndsie »

so take it to the auto's you recon....
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Post by pig75 »

Check the compressor clutch there is a bearing in it that turns when the aircon is off
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Post by Oscars »

yeh sounds like compressor pully bearing,like pig said, take belt off and give it a spin. or get a screw driver and put end on front of compressor and other end to ur ear
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Post by Shadow »

Oscars wrote:yeh sounds like compressor pully bearing,like pig said, take belt off and give it a spin. or get a screw driver and put end on front of compressor and other end to ur ear
lol

just dont let the scredriver slip under the belt while your doing this, or it could get loud.
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Post by WORE »

I USED TO WORK FOR MITSUBISHI IT IS MOST LIKELY TO BE THE TX VALVE RATTLING THERE IS A HOT LINE FIX FOR THIS CONTACT YOU LOCAL DEALER FOR THIS INFO THEY SOULD BE ABLE TO GIVE YOU A PRINT OUT OF THIS FIX

DAMO
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Post by Oscars »

i cant see how a tx will make a rittle when a'c is off
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Post by tojo_runner »

Oscars wrote:
just dont let the scredriver slip under the belt while your doing this, or it could get loud.
:rofl:
1987 Tojo 4runner nothing too exciting
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