Cruise lights up, won't engage thou.

J

Jimmy T

NAXJA Forum User

Location

Monticello, Kentucky

• Feb 16, 2014

• #1

While on a trip last night my cruise control quit working, It worked for the first half of my trip then nothing. The green light in the dash STILL lights up and will turn off and on, however the SET function of the switch will not work. What do I need to fix this? PLEASE HELP!!!

 

Johnnie Walker

Piece of Fish!

NAXJA Member

Location

WA state

• Feb 17, 2014

• #2

Brake switch is usually the culprit.

 

J

Jimmy T

NAXJA Forum User

Location

Monticello, Kentucky

• Feb 17, 2014

• #3

My brake lights still work, could it still be the brake switch? also ever since new the set side of the switch hasn't always worked on the first push, could I just need a new switch? I'm gonna try and put a voltmeter on it tomorrow. thanks for any help!!!!!!

 

88trailcrawler

NAXJA Forum User

Location

OC SoCal

• Feb 17, 2014

• #4

What model year?

My 88 cruise control was intermittent like that until I chased down vacuum leaks.

http://jeep.zerok.ru/index.php?page=78

 

Last edited: Feb 17, 2014

J

Jimmy T

NAXJA Forum User

Location

Monticello, Kentucky

• Feb 17, 2014

• #5

It has always worked, maybe have to press the set button 2 or 3 times,
now nothing. It's a 98 sport. The set button feels different than the on /off button does when pressed also.

 

Original_MudButt

NAXJA Forum User

Location

In the eighth dimension

• Feb 17, 2014

• #6

There is a hard vacuum line that goes forward from the cruise control module under the battery tray and down beside the radiator to the accumulator inside the front bumper. That vacuum line usually rots out under the battery tray and the cruise control won't work.

If there is break in the line, cut it clean and slip a piece of rubber hose that fits tightly over the cut section and your fixed.

 

old_man

NAXJA Forum User

Location

Loveland, Colorado

• Feb 17, 2014

• #7

The brake switch is a dual switch unit on a cruise control, so you brake lights may work but your cruise not.

 

H

heshhash

NAXJA Forum User

Location

Proctor, MN

• Feb 18, 2014

• #8

old_man said:

The brake switch is a dual switch unit on a cruise control, so you brake lights may work but your cruise not.

Click to expand...

Also good to note is the connector for the cruise portion is right over your toes on the brake pedal so if your foot slips it is easy to break the wire.

But in this case, since the light comes on, i would be more inclined to say vacumn leak. The light won't come on if a wire breaks.

 

J

Jimmy T

NAXJA Forum User

Location

Monticello, Kentucky

• Feb 18, 2014

• #9

I checked all vacuum lines today, no issues with any. I took a chance and took the cruise switch itself out and after taking it apart putting it back together it worked perfectly the first time, then nothing again, now it you press the switch extremely hard it will set the cruise. So I am just gonna get a new switch if possible.