monk Posted August 20, 2004 Share Posted August 20, 2004 Hey all. I've had this recent problem of a high-pitched humming coming from under the hood after I shut off my 02 obw. It tends to happen 1-2 seconds AFTER I turn off the key and lasts for about 2-3 seconds. It sounds like the hum is coming from somewhere near the right front wheel. I've also noticed it happening a little as I'm idling at a stop with the A/C on. Yesterday, it seemed as though it was giving out a little hum as the A/C compressor cycles off. Any ideas? I sure hope my compressor isn't going! I only have 40K mi on it. Quote Link to comment Share on other sites More sharing options...
blitz Posted August 20, 2004 Share Posted August 20, 2004 The only thing that comes to mind is possibly cooling fan(s)? Quote Link to comment Share on other sites More sharing options...
mattocs Posted August 20, 2004 Share Posted August 20, 2004 Yeah, I was thinking fans as soon as I read the subject...they randomly go on (alot) when the AC is on. Quote Link to comment Share on other sites More sharing options...
mrk610 Posted August 21, 2004 Share Posted August 21, 2004 I had the same problem with my 02 outback . In my situation It started out as a low hum same as yours . It got progressivly worst to were whenever I accelerated I would get this fog hornlike sound from the ac . Took it to the dealer and he ordered a new expansion valve for the ac . My ac is now so much better then before . Hope this helps . Mike in South Jersey Quote Link to comment Share on other sites More sharing options...
Panthasoccer4 Posted August 22, 2004 Share Posted August 22, 2004 I had this same problem with my 01 legacy. i had the car for 3 months and the a/c would make a resonating noise when i shut off the car. looking at my service record, there was an o-ring repair (code 015071 if that helps at all...). the repair was no charge under warranty at 6000 mi. Quote Link to comment Share on other sites More sharing options...
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