Look under the column above the pedals.
The plastic yellow box (approx 4"x4") is the cruise "computer".
I fixed mine twice in the last 15 years by simply unplugging and replugging
the electric connector to this box.
Quick and easy. Give it a try and let us know what fixes it.
Good luck - Joe 90XJ




"Dana Rohleder" > wrote in message
...
> Hi,
>
> My cruise worked sporadically when I bought my 90 XJ I6 a couple months
> ago, and after I got it back from the dealership that performed some other
> work on the vehicle, it doesn't work at all. All fuses, connections,
> vacuum seems good, but I suspect the switch or connector for the switch
> may have been "left asunder" by the crack staff at my Jeep garage when
> they tore it apart to change my key cylinder. I have the tilt column, and
> was wondering if there is an easy way to check the function of the switch
> without ripping the column apart.
>
> If that isn't the problem, can anyone suggest an order that I should go
> about replacing parts to troubleshoot? AllData says Jeep has a tester for
> the cruise system, but I really don't want to take it back there because
> they have proven to be incompetent. Is there a part in the cruise system
> that tends to crap out first on the XJ's?
>
> --
> Dana
> Port Kent, NY
>
> 2002 Saturn LW300
> 93 Jeep YJ - I4 - 125k mi.
> 90 Jeep XJ Ltd. - I6 - 145k mi.
> ---------------
> 95 Grand Cherokee Ltd.
> 91 Grand Wagoneer Ltd.
> 82 Cherokee 4dr
> 76 Cherokee 2dr
>
>