AC problems with compressor

MEMBER
1992 MAZDA 323
170 MILES

The ac makes a terrible noise when the engine is on but when accelerating it is ok we have changed the compressor 3 times and still the same noise.

any help would be appreciated thank soe

Wednesday, September 14th, 2011 AT 1:38 PM

7 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Check all the mounting brackets. Might be loose or may have broken belts allowing it to vibrate.

Roy

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Wednesday, September 14th, 2011 AT 3:22 PM

MEMBER
4 POSTS

Thanks for the advice but the garage has changed the compressor 3 times because of this noise but they are second hand compressors
if they have been in there that many times wouldnt they have seen any
broken belts or loose brackets. Is there anthing else that could do this. Thanks zoe

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Wednesday, September 14th, 2011 AT 5:47 PM

KHLOW2008

MECHANIC
41,815 POSTS

A bad harmonic damper on the crank pulley would be the most likely cause if it is screeching noises.

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Wednesday, September 14th, 2011 AT 5:53 PM

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Hi its not aq screeching noise its like clicking like something
catching on something

zoe

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Wednesday, September 14th, 2011 AT 6:15 PM

KHLOW2008

MECHANIC
41,815 POSTS

Check if the crank pulley seems wavy when engine is running. A bad harmonic damper can result in clicking noise as well.

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Wednesday, September 14th, 2011 AT 6:23 PM

MEMBER
4 POSTS

Ok will look because I dont think the problem is the compressor having changed it 3 times but the garage here thinks itis. Cant have 3 with the same problem so will check out what you say tomorrow.

Thanks zoe lucky to get anyone here who knows what they are doing

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Wednesday, September 14th, 2011 AT 6:30 PM

KHLOW2008