whistling when i apply brakes

[bmanSC]

it get's worse the harder i apply and less when i'm letting up it's not the pad's i checked them it is coming from under dash or front of wall. it only occures when i apply the brake's . it's driving me nut's thank's for your help kurt

[bmanSC]

it get's worse the harder i apply and less when i'm letting up it's not the pad's i checked them it is coming from under dash or front of wall. it only occures when i apply the brake's . it's driving me nut's thank's for your help kurt

[edgray]

a little chassis-specific info would be helpful. FYI, you can add it to your "signature" in your profile, then it will appear across the bottom of your posts, and our members can help you more precisely> Thanks, Ed

[32vcraig]

if you just purchased this coach,it's possible that that noise is from the brake hydro max booster it's normal

[NeilV]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by bmanSC:
it get's worse the harder i apply and less when i'm letting up it's not the pad's i checked them it is coming from under dash or front of wall. it only occures when i apply the brake's . it's driving me nut's thank's for your help kurt </div></BLOCKQUOTE>

That should be your emergency booster pump for you brakes. It provides power assist if your engine stalls or the belt breaks on the main hydraulic pump.

[Bob (WA0MQE)]

Do you really mean "Whistle" or are you referring to brake squeal?

[bmanSC]

just whistles i guess it likes to whistle while it works guess it's normal.thank's for everybody's help