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| | | Brakes - Hissing from under dash when press pedal | Joined: Apr 2009 Posts: 16 stranger | OP stranger Joined: Apr 2009 Posts: 16 | Hi all, I finally got around to taking our '79 Maxi camper out for a spin and found the brakes took a LOT of effort to get the van to stop. When I step on the brake pedal, there's a hissing noise from under the dash for as long as I put pressure on the pedal. My guess is there it some kind of vacuum leak that the operation of the pedal opens up which closes again when the pedal is back in its "rest" position.
Any thoughts on where to start on this? My guess is a seal in the master booster has gone bad but I'm not sure if that makes sense.
Thanks in advance,
Greg | | | Re: Brakes - Hissing from under dash when press pedal | Joined: Jul 2014 Posts: 15 stranger | stranger Joined: Jul 2014 Posts: 15 | You need to replace the vacuum power brake booster. Your local parts store should be able to order a reman one in for you.
Regards,
John
Last edited by boogievancouver; August 23rd 2014 2:39 pm.
81 GMC shorty
| | | Re: Brakes - Hissing from under dash when press pedal | Joined: Aug 2001 Posts: 12,107 Likes: 37 Maniac | Maniac Joined: Aug 2001 Posts: 12,107 Likes: 37 |
Windows- they're what make a van worth owning! | | | Re: Brakes - Hissing from under dash when press pedal | Joined: Apr 2009 Posts: 16 stranger | OP stranger Joined: Apr 2009 Posts: 16 | kinda thought that must be it, thanks for the replies.
I wonder if it's worth changing the master cylinder while I'm at it.
Greg | | | Re: Brakes - Hissing from under dash when press pedal | Joined: Oct 2009 Posts: 3,772 pooh-bah | pooh-bah Joined: Oct 2009 Posts: 3,772 | Years ago the buster came with the master on it. I would change both.
The only Stephentown on earth. I don't mind Coming to work, but that 8hr wait to go home is a bitch. No matter how little I do, I always feel I could do less. "The only thing wrong with a perfect drive to work is that you end up at work." NOVA VANS 1990 Dodge B150
| | | Re: Brakes - Hissing from under dash when press pedal | Joined: Aug 2001 Posts: 12,107 Likes: 37 Maniac | Maniac Joined: Aug 2001 Posts: 12,107 Likes: 37 | Not any more. Now boosters and master cylinders are sold separately. If you replace the master cylinder be sure to bench bleed the new one before you install it.
Windows- they're what make a van worth owning! | | |
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