another high pitch noise

[mikes86ttop]

Noticed the other morning on a cruise, and last night, it goes away when I hit the brakes, and comes right back, it seemed like it was a little louder last nite than the other morning. It's coming from behind the guage cluster it sounds like I have a bad ground in the stereo system but that's just giving you an idea of the sound, any ideas thanks Mike

 

[TurboDave]

That's usually what the brake pad wear indicators sound like. Some squealing normally and may disappear when hitting the brakes.

 

[mikes86ttop]

It definitely sounds like some kind of vac leak, its not the brakes, its coming from inside cabin, could I have a leak at the booster between fire wall?

 

[TurboDave]

Or, one of the many vacuum lines connected to your HVAC head unit.

 

[turbofabricator]

Take the C-clamp off your testicles and the high pitch squeel will go away.

Is it there with the fan off? Maybe a blower motor going south? Might be the diode trio in the alt causing the radio to squeel? Hole in a vacuum line under dash? Front pump in tranny going bad? Bad bearings in the turbo will make high pitch squeels, too.

 

[mikes86ttop]

LOL fan off raido not even hooked up, this just started its definatly some kind of vac leak that goes away when brakes are applied, I plan on getting under there this weekend, btw I still have the orig powermaster...thanks Mike