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Cruise Control

rikkilee2000

Active member
Joined
Jul 19, 2003
Messages
31
Location
Phoenix Arizona
Corvette
1987 coupe
Hey Guys,
Does anyone know what to look for first on an 87 coupe when the cruise control stops working? Fuses look good.

Thanks for any input.

Rick
 

SoLow

Well-known member
Joined
Apr 25, 2004
Messages
221
Location
Atlanta Ga
Corvette
87 dark red coupe 96 Pro Street Project
Check both vac lines for cracks or holes. The smaller one goes to the intake and the larger one goes to a switch on the peddles ie: brake and clutch.

I hopes this helps
 

rikkilee2000

Active member
Joined
Jul 19, 2003
Messages
31
Location
Phoenix Arizona
Corvette
1987 coupe
SoLow,
Thanks for responding. I'll check that this weekend. I will follow both hoses and check as far as I can. I guess one goes thru the firewall going to the pedals

Take care ,
Rick
 

Hrtbeat1

Well-known member
Joined
Nov 24, 2002
Messages
923
Location
MS Gulf Coast
Corvette
'90 coupe (gone) '96 CE LT4 Z51
I bet if you touch the vac lines going to the cruise diaphram they turn your fingers black.

Sure sign of "aging" , dry-rot, whatever. Most likely replacing them will solve your problem.

:pat
 

86PACER

Well-known member
Joined
Dec 31, 2002
Messages
182
Location
CA
Corvette
1986 Pace Car
Read here:

http://www.corvettefever.com/howto/82001/

Also, if anyone has been under the driver side dash near the pedals, the adjustment of the release switches near the brake pedal could have been disturbed. One is an electircal release, and the other a vaccum release. Both need to be adjusted properly or the cruise won't work. Also, the check valve near the base of the distributor can go bad also. Cost less than a dollar at the parts stores.
 

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