SOURCE: 93 jeep grand cherokee, cruise control
first, there is no 'fuse' identified in either of the Haynes or Chilton's manuals. I've looked. There could be a 'fuse link' somewhere in the line, as it's incomprehensible the folks at Chrysler would design this vehicle with a fire hazard built into it like that, no fuse or fuse link or relay known, but the mythological 'fuse' referenced in the troubleshooting section of both manuals.
In any case, if the vacuum line appears to not leak when you open it and **** on the line going to the rest of the vacuum system, or pull vacuum on it with a small handheld vacuum pump, and it doesn't leak, it then becomes an 'electrical' issue.
mine worked flawlessly for a a long time, and suddenly without warning 'died' and wouldn't work one day. It didn't go out on the job, in other words.
last but not least, references to the brake switch are made, but if the brake lights work, that seems to eliminate the brake switch as a possibility.
sounds expensive taking it to a Jeep dealership, but if you have a reputable one (hahahahahahah!) in your vicinity, they might zero in on it fast and fix it cheap, then again, they may not. Driving this vehicle without cruise control across country isn't so bad, but it requires a lot of foot wedging near the pedal, to get that done without having a very tired leg over time.
SOURCE: 98 plymoth grand voyager cruise control
there was a recall for an air bag problem which also fixes the cruise control and horn (clockspindle in steering wheel)
SOURCE: horn,airbag light,cruise control
ON CERTAIN MINIVANS, THE DRIVER'S AIR BAG MAY BECOME DISABLED DUE TO A FAILURE OF THE CLOCKSPRING, WHICH IS LOCATED IN THE HUB OF THE STEERING WHEEL. Consequence Summary: THIS CONDITION WILL MANIFEST ITSELF THROUGH ILLUMINATION OF THE AIR BAG WARNING LAMP, AND COULD EVENTUALLY RESULT IN A DRIVER'S AIR BAG OPEN CIRCUIT, IF THE PART IS NOT REPLACED IN A REASONABLE AMOUNT OF TIME. Corrective Summary: DEALERS WILL REPLACE THE CLOCKSPRING ASSEMBLY ON ALL COVERED VEHICLES WITH 70,000 MILES OR LESS. FOR THOSE VEHICLES WITH MORE THAN 70,000 MILES, DAIMLERCHRYSLER WILL OFFER AN EXTENDED LIFETIME WARRANTY UNDER WHICH IT WILL REPLACE THE CLOCKSPRING AT NO CHARGE IF IT FAILS. DAIMLERCHRYSLER WILL ALSO REIMBURSE OWNERS WHO HAVE PAID TO HAVE THE CLOCKSPRING REPLACED ON THEIR VEHICLES. THE RECALL BEGAN ON OCTOBER 12, 2004. OWNERS SHOULD CONTACT DAIMLERCHRYSLER AT 1-800-853-1403. A malfunctioning clockspring can also effect your cruise control,radio, wipers, and your horn relay. This can also happen one at a time til none of these are working.The solotion is to get the clockspring replaced . I DO NOT suggest you doing this on your own!
SOURCE: 93 jeep grand cherokee, cruise control
Mine turned out to be the brake switch. I could get it to work by tapping the back of the brake pedal with my foot, but it wasn't too reliable that way. The brake lights always worked.
SOURCE: 93 jeep grand cherokee, cruise control
Just in case you haven't got this fixed already, I just noticed on my 93, the cable from the vacuum control, (the cone shaped device on the passenger side near the coolant overflow ) was sitting against the tubes from the ac compressor, it had started to melt from me using the ac, if it melts through I am not sure if it would cause a vac leak, but if it did, you would only be able to detect it with the cruise on, not easy to check with the vehicle parked. I used a couple of cable ties to secure it away from the tube..not sure if you can tape around it to fix if it has melted.
just thought I would throw it into the mix.
j
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