i have a 89 towncar hissing
I have a 89 towncar and when i shift into drive there is a hissing noise it also does that when i shift into 3rd gear. Is there an advice on where the noise comes from and how to fix it or anything i can do to stop it. Also does it affect my motor or transmission performance in anyway.
The hissing you are hearing is the automatic parking brake release. With you being able to hear the vacuum, I would suggest that the diaphragm in the assembly is split, or the vacuum line has come off of the nipple.
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