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82 Cruise control that wont disengage

Forum: C3 Electrical, Body and Interior

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82 Cruise control that wont disengage

Posted: 2/18/07 4:20amMessage 1 of 8
p
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Huntsville, TX - USA
Joined: 11/20/2006
Posts: 19
Vette(s): 1982
It seems that when I engage the cruise control at any speed when I press the brake she will disengage for a moment the reengage like you hit resume, the only way to get her to stop reengaging is to shut it off???? Ideas
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82 Cruise control that wont disengage

Posted: 2/18/07 10:29amMessage 2 of 8
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Check the vacuum side of the brake switch. It could be plugged up with something.
The brake switch kills the power to the electrical portion of the CC, but it also has a vacuum switch that "dumps" the vac. off of the servo connected to the carb linkage.

Joel Adams
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82 Cruise control that wont disengage

Posted: 2/18/07 11:14amMessage 3 of 8
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Huntsville, TX - USA
Joined: 11/20/2006
Posts: 19
Vette(s): 1982
Joel,
 
Thanks for the info, was kind of figuring the brake switch but I wanted some feed back before I took the time to stand on my head to replace it....LOL
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82 Cruise control that wont disengage

Posted: 2/18/07 11:17amMessage 4 of 8
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Check to see if someone hasn't just plugged the hose going to the switch...it has happened. The switch may have been the source of a vac. leak, and was just plugged to "fix" it. You may need to trace the hose from the switch all the way up...ya never know...

Joel Adams
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82 Cruise control that wont disengage

Posted: 2/18/07 12:12pmMessage 5 of 8
p
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Huntsville, TX - USA
Joined: 11/20/2006
Posts: 19
Vette(s): 1982
Good point, I have come accross several "fixes" that past owners have done to my Vette..LOL
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82 Cruise control that wont disengage

Posted: 2/18/07 3:20pmMessage 6 of 8
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Huntsville, TX - USA
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Posts: 19
Vette(s): 1982
Joel,
 
Talked my son into changing out the brake switchLOL Told him he earned 15 Vette points... (gets to go to the corner store and back) really just did want my old knees on the ground for who know how long...
 
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82 Cruise control that wont disengage

Posted: 2/18/07 3:42pmMessage 7 of 8
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Fox Island, WA - USA
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Vette(s): 1978 Indy Pace Car 4851 of 6502, Auto, L-48

Heres one for ya Joel, how about a cruise control that continually gains speed Shocked Set it at 60, few mins later its at 65 then if I wait long enough its at 70, any ideas?

I know its a Pace Car but I'm not pacing the Indy 500 or anything here LOL
cilrah2007-02-18 15:43:56

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82 Cruise control that wont disengage

Posted: 2/18/07 4:05pmMessage 8 of 8
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
[QUOTE=cilrah]

Heres one for ya Joel, how about a cruise control that continually gains speed Shocked Set it at 60, few mins later its at 65 then if I wait long enough its at 70, any ideas?


I know its a Pace Car but I'm not pacing the Indy 500 or anything here LOL
[/QUOTE]

Probably a transducer issue, Mark. The transducer is on the driver side fenderwell, and had the speedo cable(s) coming and going from it. Could be dirty on the inside, or the grease has hardened. That would mean replacement, or repair.

It may be a longshot, but the servo(vac. acuator) may have a (small)hole in it, also, or the regulator isn't regulating.Adams' Apple2007-02-18 16:05:33

Joel Adams
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