What is this clicking noise!! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 02-18-2007, 07:33 PM Thread Starter
 
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What is this clicking noise!!

I have a 94 chevy 6.5 turbo diesel and all of a sudden i noticed a clicking noise from the engine. It is only heard when you rev it up above 1000rpm or so. It is coming from right around the air compressor, it sounds like its the pulley right below that (what is that one). I know it is something on the belt pathway though bcause i removed the serpentine belt and cranked it and no noise. This is really scaring me so any help is appreciated.
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post #2 of 5 (permalink) Old 02-18-2007, 07:36 PM
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Sounds like the vacuum pump to me.
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post #3 of 5 (permalink) Old 02-18-2007, 08:35 PM Thread Starter
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how hard is it to replace that because I have a junk yard in the area with a ton of 6.5's so im sure i could grab one for nothing.
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post #4 of 5 (permalink) Old 02-19-2007, 05:11 PM Thread Starter
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post #5 of 5 (permalink) Old 02-19-2007, 08:51 PM
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From what I remember you had to remove the AC compressor and maybe its lower bracket to get the vacuum pump off.
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