5 replies to this topic

[blackt5r]

Had Evaporator replaced last year, since then when I turn on the air I hear a irritating high pitched whistle as I accelerate.
This will occur as I step on the gas pedal, and only occurs when the A/C is on.
I've checked the temp sensors and they check okay.
Any Thoughts?

[R4Life]

If memory serves right, I had that issue on my car a couple of years ao. It was a faint whine. I believe its a bearing in the A/C fan motor. I had the fan replaced.

Edit : Fan means blower.

Edited by R4Life, 11 May 2005 - 07:27 PM.

[MrWinkey]

Doubt the noise is fan related being that it only happens while on accel..and with the A/C on...is it a belt noise possibly....don't know how loud it is and it may be normal, compressor just doing it's job?

[Bay13]

I'd check the orface tube, if it's semi clogged or the "O" ring going bad you could get a whistle.

[blackt5r]

I'd check the orface tube, if it's semi clogged or the "O" ring going bad you could get a whistle.

Thanks for the responses!

If the oriface is clogged, can I perform this repair myself? Also, I'm assuming, if the O ring needs replacing, this would require system evacuation and re-pressurization. Correct?

[Sherman]

Silly question, but where is that? I've been etting a whistle as my AC cycles on and off as well. I recall reading some time ago that there's a valve somewhere, fairly inexpensive that does this as it fails. Maybe I dreamt it...