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stevenm
New User
Mar 5, 2011, 4:56 AM
Post #1 of 2
(1384 views)
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apparent vacumm leak
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I have a 1992 Cadillac Sedan deville (4.9) that makes a "hissing noise" when shifting into drive or reverse. Does not make noise in park or neutral. Also, due to this apparent leak, the car will not idle when you stop at a traffic light.
(sometimes it will go dead, but will crank back up). Car runs like a champ from 15mph to 75mph. I worked in Cadillac
parts years ago and it seems like there was some kind of valve on the park release we sold a lot of. What's your opinion?
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 5, 2011, 5:53 AM
Post #2 of 2
(1356 views)
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Re: apparent vacumm leak
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Look under the dash on the driver's side. It sounds like the vacuum controlled, parking brake release is either disconnected or leaking.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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