- posted 14 years ago
Car is 96 Merc Sable S/W w 3.0 engine. It's emitting a noise that sounds just like a siren. It started out as just a humming sound some months ago. I finally got tired of the noise and decided that it must be the power steering pump, so I replaced it, along with the serpentine belt. (I was careful to bleed the pump.) Immediately the sound increased to a loud siren-sounding noise. I figured it might be a bad replacement pump, so I got another one and put it in. Same thing, just slightly less noisy. The sound is coming from the right front corner of the engine. It is really loud. You can hear my car coming down the road a hundred yards away. Again... it is a high-pitched sound very much like a siren.
BTW, the A/C does not work. But I don't know when it went out. Last time I used it was in September.
Could it be the A/C compressor or clutch? I've never heard one making this kind of noise though. The noise is so loud I cannot pinpoint exactly where it's coming from. I'm a bit worried that it may be an internal problem in the motor itself.