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Old Jul 17, 2018 | 05:55 PM
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Default Cruise Control
The cruise control on my 86 auto trans stopped working. The fuse is good. Any suggestions? (about a fix, that is )
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Old Jul 17, 2018 | 06:15 PM
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Try lifting up on the brake pedal while driving. If that works, adjust the brake light switch.
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Old Jul 17, 2018 | 06:44 PM
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Check your vacuum hoses as they could have developed cracks around the tips. If so, just trim them back about 1/2 inch or until you remove the cracks.
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Old Jul 18, 2018 | 01:08 PM
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The cruise control in our 1988 Coupe died one day and I looked under the hood and there were two vacuum leaks, one was at the EGR solenoid and the second was at the cruise control device near the battery. I cut off the ends and the cruise came back to life. Since then I have put little tie wraps on the vacuum lines to secure them as I cut off 1" from the end of each one I worked on.

Best wishes getting your Cruise Control back to work again, it shouldn't be too bad as you can get to most of the parts, most of the time!
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Old Jul 18, 2018 | 01:41 PM
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Originally Posted by 84 4+3
Try lifting up on the brake pedal while driving. If that works, adjust the brake light switch.
Originally Posted by billschroeder5842
Check your vacuum hoses as they could have developed cracks around the tips. If so, just trim them back about 1/2 inch or until you remove the cracks.
I was going to make these suggestion as well.
The brake switch is a common problem.
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Old Jul 18, 2018 | 03:35 PM
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The contacts on the brake switch on my 88 were corroded. Changed the switch and no problems since.
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Old Jul 19, 2018 | 03:26 PM
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Thanks for all the help, I shall check it out...
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Old Jul 19, 2018 | 04:09 PM
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If you have a manual tranny, know there's a kickout switch on the clutch also.
If you don't have a FSM, get one. There are diagnostics in there that should take you through fixing it.
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Old Jul 19, 2018 | 05:44 PM
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Originally Posted by cdm747
The contacts on the brake switch on my 88 were corroded. Changed the switch and no problems since.


Check the brake switches with multimeter, I had an internal failure in one of the switches.
The contact inside broke making a poor connection, would drop out of cruise at random and one day no more cruise.
Check the vacuum hoses and don't forget the dash controls the cruise control also, look at Batee's website for schematics www.batee.com

Good luck
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