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Old 12-27-2008, 09:47 PM
labreejr's Avatar
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Vaccum hose above my brake pedal??

I've got a 84 Cutlass I'm rebuilding. I put a Chevy 383 in it and I'm now getting rid of some of the unused wiring. There is a rubber hose connected to some sort of switch on my brake pedal. It runs thru the firewall into the engine bay where it just hangs. What should this go to?

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Old 12-28-2008, 07:43 AM
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that vacuum hose is for cruise control and if your not using cruise, i'd change brake switch, some cars have 2 switches going to brake pedal, i know cutlass i stripped for parts did have 2 brake switches one for brake lights and other for cruise control and to operate TCC switch in trans, so if no cruise or lock up converter i'd remove the switch and hose.
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Old 12-28-2008, 12:58 PM
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Just to expand on the previous post a little, the purpose of that vacuum hose and valve is to immediately dump the vacuum in the cruise control actuator so the throttle returns to idle quickly. The assumption is that if you're on the brakes, you don't want the cruise control holding the throttle open. It's also a backup in case the valve in the cruise actuator sticks. If you are keeping the cruise, you need it. If not, you can get rid of it.
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