Cruise Control doesn't activate
Thread Starter
Intermediate
Joined: Oct 2015
Posts: 48
Likes: 7
From: Vancouver BC
Cruise Control doesn't activate
Hey folks,
Time to tackle another of the various small things that have never worked on my car since I bought it!
1990 ZR-1. The cruise control does not function at all (pressing SET doesn't do anything). What's more, the fuse for cruise control/power mirrors blows randomly, usually within about 30 minutes of driving.
Other info:
-I've taken the steering column apart to check the wires there. No issues with continuity and no exposed patches that I could see
-I've checked for vacuum leaks just in case (I imagine fuses blowing indicates electrical), vacuum system is fine.
-The fuse does not blow immediately on turning cruise on, or when pushing SET or R/A, it seems to blow randomly
-The cruise does not function even when the fuse is currently solid (which I can verify because my power mirrors work then).
Any suggestions where to start looking?
Thanks in advance.
Time to tackle another of the various small things that have never worked on my car since I bought it!
1990 ZR-1. The cruise control does not function at all (pressing SET doesn't do anything). What's more, the fuse for cruise control/power mirrors blows randomly, usually within about 30 minutes of driving.
Other info:
-I've taken the steering column apart to check the wires there. No issues with continuity and no exposed patches that I could see
-I've checked for vacuum leaks just in case (I imagine fuses blowing indicates electrical), vacuum system is fine.
-The fuse does not blow immediately on turning cruise on, or when pushing SET or R/A, it seems to blow randomly
-The cruise does not function even when the fuse is currently solid (which I can verify because my power mirrors work then).
Any suggestions where to start looking?
Thanks in advance.
Pro
Joined: Mar 2006
Posts: 700
Likes: 2
From: Spring Hill Florida
When mine stopped working I faced the same problem. I finally found it under the rubber boot. Above your battery is where the cable comes in and out to the throttle control. Look under the rubber boot and there is a chain. That chain is in two pieces. They are connected by a "chain connector". Mine had rusted in two. New connector and it now works. Hope this helps.
Thread Starter
Intermediate
Joined: Oct 2015
Posts: 48
Likes: 7
From: Vancouver BC
When mine stopped working I faced the same problem. I finally found it under the rubber boot. Above your battery is where the cable comes in and out to the throttle control. Look under the rubber boot and there is a chain. That chain is in two pieces. They are connected by a "chain connector". Mine had rusted in two. New connector and it now works. Hope this helps.
It seems to be fine, and when I press the diaphragm in by hand it is moving the throttle, so I don't think it's a mechanical problem?
I'm guessing there's a short somewhere but I don't know where to start looking. Thanks for the suggestion though!
Burning Brakes
Joined: Jan 2017
Posts: 961
Likes: 237
From: Diamondhead Mississippi
St. Jude Donor '17-'18-'19-'20-'21-'22
You might try checking the switches on the brake and clutch pedals. I have an auto but the switch on my brake pedal was corroded and not making contact. I changed the switch and no problems since. This should not cause the fuse to blow but could be part of you problem.
