Does anyone hear a clunking sound when they have there A/C on. Mine does it every now and then. The Mach drives fine and the A/C works fine, just trying to see if anyone else has experienced this.
-Jason
-Jason
Noises when the A/C is on
- Thread starter jason2004gt
- Start date
Yes, I've heard that exact clunk noise several times when turning the A/C on. I have no idea what it is though. ha ha....sorry, I not much help.
Same here. It's real annoying.
Mine has had it since new, (I currently have a little over 48,000 miles on my Mach). It doesn't affect the performance of the a/c, just sounds like a air door in the HVAC system slamming open and shut. If I recall correctly, though, the actual cause is a line hitting the firewall when the a/c compressor cycles, supposed to be a TSB fix for it. I may fix it someday, when I don't have other projects going on.
Some do it some dont (mine dont) there is a TSB to fix it but you most likely will have to ask the serv adv about it. It doesnt effect the A/C perf. other than it is annoying. Turn up the radio or get louder exhaust.lol
2k3mk1 said:
I like the way you think!
Thanks for the input everyone.
-Jason
When you turn it on? Thats probably the recirculate lid slamming open or slamming shut.
Yeah, I have had this on a few mustangs. It was the plate on the front of the a/c compressor being loose. (not sure if that is called the recirculate lid or not). But Basically the pulley spins freely until you engage the a/c then that plate clamps down so you are using your belt to drive it.
Thats the compressor clutch. It cycles on and off as the vehicle is running... the recirculate lid is on the a/c case behind the dash. Thats the different between Normal A/C and Max A/C... the recirculate door being open or closed...
A friend of mine had an 04 that did it too. I guess its pretty common.
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