Same noise

Jul 04, 2009

- Thanks for the info. On the 28th of June, I did exactly what you just suggested. I went to the pros and had the system evacuated. I took the entire AC system appart, flushed it to the extreme, repalced with a new compressor, reciever dryer and orifice tube - total parts cost $315.00. I then had the pros evacuate (a 2d time)and recharge the system again. My AC now works great and with no noise. My research found that the "clattering" noise was indeed the compressor (Denso) which had shed an internal valve/flap (apparently a very common problem). This causes the internals in the compreesor to bind up (spin erratically) which causes the belt tensioner to "chatter" away like a playing card in bike spokes going 100mph. The belt will ultimately break or come off, and in the Suburban, often break or severe the transmission cooling lines. I think eventually the compressor would have really tanked. None the less, the estimate to do the same fix here in central Texas was in the $2500.00 arena. Ultimately with parts, evacuation x 2 and a recharge, some fairly easy labor and a lot of cuss'n, I did it for under $400.00. By the by, to buy the AC clutch would have been in excess of $350.00 and would not have solved the problem - I think. Hope this helps others out there.