chirping sound coming from air conditioner... what is this?

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
Metal Angel
Posts: 291
Joined: Fri May 01, 2009 1:56 pm
Car: 1990 240sx hatchback

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'90 hatch base. when I have my a/c on my car makes one chirp every once in a while under WOT, sometimes at low rpms and sometimes at high rpms. Sometimes between high rpm shifts and downshifts. Is this ok? Is there a fix? does anyone else get this chirp?


goldfish
Posts: 118
Joined: Sat Aug 09, 2008 4:06 pm
Car: 2005 Dodge Neon SRT-4, 1995 240sx

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Is the noise in the cabin? Or in the engine bay?

If it's in the bay, I bet your belt is slipping ever so slightly Either buy a new belt or try adding a little more tension to it with the idler pulley.It's possible the clutch on your AC is having issues as well. When you WOT, your AC will turn off briefly... which could be causing a slight slip in the belt or a fun noise when the clutch disengages.

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fijianrocket
Posts: 499
Joined: Wed Jun 21, 2006 6:55 am
Car: 95 nissan 240sx se, 74 jeep CJ5, 76 CJ5

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I agree . Mine had a similar problem with the belt slipping. My clutch was also going bad so i rebuilt my compressor and it works fine.

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Two Fowty
Posts: 399
Joined: Sun Nov 16, 2008 10:09 am
Car: 1990 240sx hatch, 1989 240sx hatch

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how about not use a/c.. its worthless. get rid of that s***

Papi Chulo
Posts: 2395
Joined: Thu Oct 11, 2007 11:51 am
Car: 72' Datsun 510

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Probably a bird.

Get a cat.


str33tprintz
Posts: 190
Joined: Thu Mar 12, 2009 10:02 pm
Car: 1996 Nissan 240sx SE

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damn you beat me to it

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adrianfromthecastle
Posts: 18849
Joined: Wed Jun 29, 2005 5:36 am
Car: 1992 Nissan 240sx
Location: California

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back when I was ka24de.. i had the same "chirp" or slight momentary squeel... its the belt... but gave me a smile because it sounded almost like a BOV.. esp. cuz it only happened when I up shifted, lol.


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