1994 turbo diesel
- Thread starter mac3
- Start date
make sure all your brake lights,turn signals,4 way flashers,and 3rd brake light work.if all that is good you can try jumping the plug on the brake master cylinder.does your tach and speedo work?
sootman73
Registered User
mine doesn't work either. its a real downer cuz i drive 4 hours to school and back. zigg has a troubleshooting guide to find the problem but its pretty long. not real complicated but still looks like a pain in the a$$!
http://www.members.shaw.ca/k2pilot/
in the list to the left.
http://www.members.shaw.ca/k2pilot/
in the list to the left.
is it a 5 speed or an auto trans?it should be an auto
icanfixall
Official GMM hand model
Sometimes its a vacuum problem. Locate the large tomato can looking vacuum resivour near the master cylinder. Mine had a hole in it under the barrel. I used RTV on it years ago and its been fine. Another vacuum place to look is the vacuum breaker valve located on the brake peddle. Check and see if its closed when the peddle is up. As you press on the peddle this action opens the valve and that drops the vacuum so the cruise shuts down.
is it a factory turbo or an aftermarket turbo????if its factory the 5 speed is your problem.the turbo IDI only came with an auto trans.if it is a factory turbo truck you need to check all the wireing for the tranny.something isnt hooked up right.i did a 5 speed conversion on my 94 turbo truck and my cruise still works
MEL: the 92-94s should be all electronic.i just looked at my 94 for you,its electric,no vacuum
Timthetoolman
Full Access Member
He is right, all electronic, mine was not working because of the clutch depression switch, will your truck start without mashing in on the clutch.
There are two different switchs and feeds coming from the clutch switch.
There are two different switchs and feeds coming from the clutch switch.
'93 is the year they went to all electric cruise.
'92 still had the vac setup. remember the first year of any new body style is the morphidite.
'92 still had the vac setup. remember the first year of any new body style is the morphidite.
if his was an auto then im willing to bet his truck is like mine and will start without stepping on the clutch.but whoever did the conversion didnt wire it right most likely.i was expecting my cruise to not work when it was done but it works perfectly.
