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Re: Help! Hissing Air Noise from dash vent

posted by  someone claiming to be Keith on  Fri Jun 11 19:02 CST 1999 [RELATED]

Hi Michael

I think you will find that the diaphram servo for the heater box has split. if you pull down the lower dash trim above the pedal`s and look up at the heater box, there are two servo`s one has two vacuum line`s going to it, the other only has one, the two line servo is the most common one to fail, it can be replaced insitue but it is not easy. you can confirm which servo is leaking by pinching off the vacuum line`s one by one till the hiss stops. good luck....





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New Re: Help! Hissing Air Noise from dash vent
posted by  someone claiming to be Keith  on Fri Jun 11 19:02 CST 1999 >


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