C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

86 Cruise not working.

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Old Nov 22, 2016 | 09:13 PM
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Default 86 Cruise not working.

Been trying to fig out the prob. replaced all vac hoses to it, check valve, the servo was replaced because would not pull w vaccum. I have one vacuum/electrical switch on the clutch and only a brake light swtich on brakes, the FSM is confusing in that it looks to show a vac switch on both brake and clutch w a manual as I have. switch was changed also just because. I am not sure where to go now. When key is on and the multifunction is moved to on, I have power at the switch connector both sides but not at the clutch switch which I assumed it would have. Also have one two wire light red/pink? and white connector that has been wrapped around the side brace by kick panel that is hot on white wire cannot fig out where it would go or if it should be to the second vac/elec switch at the brake pedal that fsm shows on the pic

Last edited by C486Bill; Nov 22, 2016 at 09:15 PM.
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Old Nov 22, 2016 | 10:16 PM
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There is supposed to be a vacuum break switch on both the brake and clutch pedals. You can just plug the line for quick test. Be aware that the CC is controlled by the dash cluster. Some had cruise circuitry and some didn't. If yours has been swapped it may never work.
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Old Nov 22, 2016 | 11:07 PM
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Originally Posted by jv9999
There is supposed to be a vacuum break switch on both the brake and clutch pedals. You can just plug the line for quick test. Be aware that the CC is controlled by the dash cluster. Some had cruise circuitry and some didn't. If yours has been swapped it may never work.
So after the vacuum hose comes thru the firewall is it supposed to tee between the two switches? One of which my car is missng which wouldd def be a prob lol
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Old Dec 29, 2016 | 11:06 PM
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Here's a post I did on fixing my cruise control. Post #1934 in the thread:

https://www.corvetteforum.com/forums...post1592944315
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