Metalic Flapping Noise

[Newbee Chick]

Happens when first starting in drive with AC on, and only when accelerating... Any ideas?

[Newbee Chick]

Happens when first starting in drive with AC on, and only when accelerating... Any ideas?

[Newbee Chick]

Happens when first starting in drive with AC on, and only when accelerating... Any ideas?

[Dan]

Not sure I understand your problem. Please clarify by posting pictures of yourself in various revealing outfits.

http://www.elcova.com/infopop/emoticons/icon_biggrin.gif

[Newbee Chick]

Don't know if that would help you understand the problem any better =) However, to clarify a little better... When I start the engine with the AC on, put the vehicle in drive let off the brake and press the gas pedal, there is a metalic flapping noise that comes from somewhere under the engine. It stops when I let off the gas, or as the engine shifts into 2nd, and then about 1/2 way thorugh 2nd, it starts again, and the flapping noise gets faster... and it usually happens mostly when the engine is cold.

[KenP]

Welcome Chick. No idea here either, and my suggestion was taken. http://www.elcova.com/infopop/emoticons/icon_biggrin.gif I'd hate to think it was your a/c compressor so soon. http://www.elcova.com/infopop/emoticons/icon_frown.gif

[Newbee Chick]

I hope it's not the AC compressor, since it only makes the noise as I accelerate, and only sporadically, (hope I spelled that right http://www.elcova.com/infopop/emoticons/icon_rolleyes.gif) It sounds like a plastic grocery bag on someone's bumper would sound like, only more like a tin or aluminum material. And kinda like a card in the spokes of a 5 yr old's bicycle wheel http://www.elcova.com/infopop/emoticons/icon_confused.gif

[JMV1210]

We all assume you’re referring to a 2003/2004 Hummer. Right? Take it to the dealer and let them deal with it.

[Newbee Chick]

Yes, it is a 2003, and it was just there 2 weeks ago for the noise, that they couldn't figure out. They thought is was the heat shield, and "tightened" it and the muffler... Didn't fix it, and I will be making another appt with them for another "look-see".

[JMV1210]

sent you a private message

[Klaus]

Could be this:

http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=7616086663&r=7616086663#7616086663

[PARAGON]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Klaus:
Could be this:

http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=7616086663&r=7616086663#7616086663 <HR></BLOCKQUOTE>Sounds like the culprit to me. Print the TSB and take it with you to your service appointment and tell them to check according to it.

[pushrod]

Klaus' service bulletin reminded me of another possible cause. A friend with an '03 model exhibited a similar flapping noise to me last winter. We thought the bearings had failed in the a/c fan motor. Turns out a blade or two of pine straw had somehow or other gotten into the vents on the cowl and all the way to the a/c fan. As the fan blades hit the pine straw, you could hear a loud clicking or flapping sound. Check for that too if you think the noise is coming from the a/c fan.

[It\'s a Dry Heat]

What about a fan belt comming apart. Air intake shroud loose. sorry spelling.