If the engine is cool or cold when you first turn on the AC your noise could be a loose AC belt. When it slips at the compressor it can make a lot of racket and vibrations you can feel. As the engine temperature climbs the belts actually get tighter and therefore no slippage. As a result, I prefer to adjust the belts when the engine is cold and recheck the tension when the engine gets hot. New belts are especially necessary to recheck. After 15 minutes at temperature the new belt "breaks-in" and usually needs retightened. Harold McElraft - 3354 --- In dmcnews@xxxxxxxxxxxxxxx, "sweitzel_2000" <sweitzel@xxxx> wrote: > So I have my AC charged with Freeze 12. Everything is working great. > It blows nice and icy cold as well as hold pressure. No leaks. > > However, I noticed an interesting thing. Once the car has sat > overnight, if I turn on the AC for the first time the next day, i get > a nasty rattle within what I presume are the hoses underneath the > car. I can feel it in the driver's seat. The rattling last for only 1 > possibly 2 seconds then immediatly quiets and goes away, from that > point, the system operates completely normally. Would this be a sign > of overcharging or something else possibly? To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/