I-6 4.0L or V8? 4.7L???????
thats not a good sign. not at all. NoT road worthy, at all.
pray tell. the brake pedal cancels Cruise , right.>?
sounds like Toyota Disease.?
floor mats hitting throttle pedal?
let me tell you that newer cars can kill cruise for 18 reasons.
but the older the car , the less reasons.
some do , only with brake switch cancel or neutral selection (man killer cars.)
you never posted what engine option is there, or transmission.
on the newer cars, if the TBW , throttle by wire fails.
cruise is rendered Inop.
and goes to limphome. (low speeds and cruise is dead..)
here is the FSM. see chapter called fueling....http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
btw all my early jeeps had this issue. with bad TPS.
1988 to 1999
my 08 , no.
all MAP based speed densty fuel systems at risk (by its nature)
to have excessive RPM.
any air leaks.
or throttle jammed open.
or vacuum leaks,
on the new cars its has a new check to see that that dont happen.
RPM - and manifold vacuum, do not match TPS angle.
in gringo that means the engine actions dont match your right foot.
i then drops , cruise, and then goes to limphome mode on all newer cars. my wrangler this happened beginning for 07, but its 3.8L V6.
the mech, would first makes sure the engine runs perfect
by driving. it , and then using a scan tool (rent one) and see if there
are any DTC error any where. a FULL SCAN.
first see page 50 , (FSM) fueling, figure 37]
see that, see those cables,
you need to find out of any of those are sticking.
as you can see the Cruise control has its own CABLE
so both it , the control actuator or the cable can stick.
these need careful, checking per the FSM.
sadly my FSM above has bugs (its not really mine, just my link)
has an error in the speedcontrol chapter, you can see it.
alldata.com has all this, log in and read.
the key to finding this, is.
does the brake pedal cancel it.
if no. then the Cruise acuator or something else has jammmed
open the throttle. ( or any gross air leak to engine induction)