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Jeep Cherokee, Grand Cherokee Cruise Control Problems



  • Hope this helps, I had the exact same problem with my 2001 Grand Cherokee, ((fan position switch won't work (go from floor to dash to windshield, etc.)), and the cruise control won't engage. I'm told both are due to a vacuum line problem, ). I fixed mine by replacing 1/4" hose located directly under battery mounting pan. Takes a little work but might be worth it.

    First remove battery. Then remove pan, you'll need a deep socket 10mm with extentions to get at one mounting nut. Remove two nuts holding cable to fuse/relay box attached to pan. Move pan out of way. The hose that's causing all the problems is about 6" long going to servo. Replaced hose ($.77) and it took care of both problems. Total job took about 1 hour. From what I have been reading this is the hose that's causing everyone problems.
  • Thanks for the excellent information. The cruise control on my 2000 Grand Cherokee would not engage. I followed your instructions and found the broken vacuume line below the battery pan. I replaced the thin plastic and brittle broken line with about 1 foot of 1/4" fuel line. I did have to purchase a deep socket 10mm socket and a 10" extension. Wow - I have cruise control again!!!!
  • Thanks for the step by step on what to look for and how to fix it. I just bought my first Jeep Cherokee Sport ever! From the nicest couple, who had the same problems. They got the actual unit replaced, but this did not help the problem. Now, I can see what I might be, the hose. My question is can a person with no mechanical experience do this? I would like to try but don't want to cause further problems. Thanks in advance
  • eyedamaneyedaman Posts: 1
    I had the same problem. First I checked the cruise cable throttle that was linked under the battery. It was intact. I changed three vacuum hoses under the battery. Before I put the battery in I followed the vacuum hoses, to the plastic line, and found an unconnected hose on the carburetor side, This hose was from the vacuum plastic line, attached to a rubber hose that was attached to the side of the engine body. I plugged that hose in and everything worked, cruise and blower. Because it was loose on the body, I replaced that hose. Total cost $2.50 worth of 1/4 inch hose. It didn't cost me anything to get the Chilton book from the library.
  • I just purchased a JGC Limited 4x4 with 98k for $4500 with a clean carfax report, well taken care of (had papers for the last 4 years) and was a very nice ride. I noticed that the steering wheel squeeks when I turn the wheel and the cruise control doesn't work. I was wondering if it's possible for the steering wheel to squeek because of the cruise control or if it just needs to be sprayed with WD40?? I know nothing about the mechanics of cars and am a first time jeep owner, I was wondering if I got a good deal on this cherokee and how expensive it is to have a mechanic fix the cruise control? Thanks!
  • I had a very squeeky steering wheel after I repaired a leaky power steering hose. I added power steering fluid I purchased from the local auto part store and that is when it became very skeeky. I was told that Chrylser and Jeep power steering fluid would correct the problem. I used a turkey baster to suck out as much fluid as I could out of the power steering reservore and filled it with fluid purhased from the Jeep dealer. It corrected the problem instantly!!!
  • After reading all these posts, I think I have a similar issue...But I wanted to ask anyway. My 2000 Cherokee Sport as a few issues. The Cruise Control won't hold a steady speed - it'll go + or - 10 mph over the selected speed. Also, the fan blows mostly out the defrost vents. I had it in for an A/C service because it wasn't blowing cold. They checked everything under the hood and charged the A/C a little, but were unable to get it blowing cold. They wanted to tear into the dash to check the blend door but I told them to wait due to the cost (they figured about $300 just to find out if the blend door was stuck). I found the blend door actuator under the glove box. It works fine. I removed it and spun the blend door manually. It moves freely and there seems to be sufficient vaccum pressure, at least at that point. Are there more things I can check?
  • sdglasssdglass Posts: 1
    1994 Grand Cherokee w/4.0L, auto, ac, power windows, power locks and 4 wheel drive. I have a temperature dependent cruise control problem, as the temp. outside warms the cruise control quits working, I'm in Kansas. This event occurs roughly 50 miles after constant driving. Along with this, the vehicle will lurch forward as the cruise accelerates and deaccelerates on its own, before the 50 miles. Once the cruise has quit working the speedometer and the tach cease to work. All other gauges on the dash continue to work. This only happens during the warm months, late spring thru early fall.
  • jayr0218jayr0218 Posts: 1
    I have a 2004 Grand Cherokee, out of no where my curise control stops working. I never had a problem with it til now. The switch still works fine, I dont know where to begin to look for vaccum hose. Any ideas?
  • The cruise control on my peach of a 94 Jeep Cherokee Sport (144,000 original kms) stopped working a few years ago. My regular mechanic couldn't solve the problem and today, the local Jeep dealership said I needed to replace the power control module @ +$800.00. They said they checked the hoses. I use the tilt wheel feature all the time and some other hoses (vent/aircon) were recently replaced.

    I've read the other blogs about hoses etc. How likely is it that this costly computer needs to be replaced?
  • Hi there,
    I had cruise control added after-market to my 94 Jeep Cherokee Sport at the dealership a few years after purchase. It looks just like the one in the manual. It was working perfectly until a year or so age, now I'm trying to get it repaired. A different Jeep dealership says it needs a new powertrain module control - I've left a post about that.
  • Did you replace the Plastic tube or rubber hose at the servo
  • I have a 2001 Sport and I need cruise. any answers to install one? I broke my back a few years ago and I need to give the leg a break. Best vehicle I ever owned. no trouble at all for 90,000 now Help.
  • I was reading through all posts about this problem and it seems to be a problem with a lot of jeeps. I have a 1995 cherokee and my cruise control has never worked and neither has the AC. Also, my heat only blows out of the defrost. Do you think that fix will work for this as well?
  • cmoss4cmoss4 Posts: 1
    Recently replaced original starter (not bad for 162,000 miles and 11 yrs) and the car starts great but now cruise control is out. On/off switch no longer lights the dash indicator so I am guessing electrical vs. vacuum problem. Any suggestions on easiest way to check this? Did not seem to have a dedicate fuse that i could find that was bad
    Thanks for help
  • The Cruise control works fine when it works but if the car goes over a pot hole or a rough spot in the road it shuts off just like I had hit the brake or something. Any ideas?
  • maybe a lose vacumn hose
  • tuggajbtuggajb Posts: 646
    brake light switch needs adjustment
  • gmaiergmaier Posts: 1
    I just recently bought a 2004 Jeep grand limited and the cruise control is the only thing that won't work. The light in dash comes on but the set botton won't set the speed? Read your post, thought you might have found an answer. Can anybody please help, I have a long trip to go on soon.
  • speglowspeglow Posts: 2
    My cruise control no longer works. The light will not come on in the dash. I looked behind the airbag and there doesn't appear to be power to the "on-off" switch? I can not find a fuse? My airbag light is also on in the dash. Not sure if they are related?
  • Mine has just gone the same, I have a 2000W Cherokee Orvis, my cruise contol has stopped working plus the airbag warning light is on all the time PLUS Ive no horn. I wonder if theyre all linked.....seems a strange coincidence if theyre not linked.
    If you have any ideas please let me know.
  • speglowspeglow Posts: 2
    Have you found a solution to your cruise? I'm being told that mine problem is probably the clock-spring behind the airbag in the stearing wheel. Unfortunaetly it can only be purchased via dealer at $185-$195 bucks. I'm putting it off because I hate to spend $200 and it doesn't fix the problem. Looking for the part in junk yards, but it's only on a 1999 so I'm told?
  • My cruise is fixed! After reading this forum, I wondered if it was the vacuum hose or whatever. It was a $30 part and a quick fix! Not the over $200 I was told. Runs like a charm now!
  • darryl6darryl6 Posts: 1
    I had a problem with Air Bag light, CC, horn and radio controls on my 1999 Jeep Grand Cherokee. Each one went out one at a time. I replaced the clockspring which transfers all controls from the steering wheel to the rest of the car. Now all of the controls work and the airbag light is off. The CC light now comes on but the cruise control still does not work. It was not working before the clockspring went out. If you turn on your CC and the light does not come on and/or the airbag light is on, then it is most likely the clockspring. I think my CC problem is vacuum related and still have to take a look at it.
    BEWARE - if you decide to replace the clockspring, make sure you get a very good steering wheel or gear puller. The one I bought from Kragen that was made for this car snapped. I got an 8 way reversible 2/3 jaw puller from Napa that did the trick.
  • Just bought a 2000 GC two weeks ago. Yesterday the vent selector stopped working the the CC went out. After reading all the post, checked the vacuum hose and found one end off. Thanks,
  • Hey men i have a question, the problem in my 2002 jeep grand cherokee, i think is the pcm but i see is no fuse or anything the can make it prevent from mess up the pcm, so they should make a recall for it , but how did you make dealer to give you a new pcm at no cost.?
  • 2001 jeep Grand Cherokee cruise control works good, but when driving with cruise set and outside air temp goes below 40 degrees, the engine rpm will jump 300 rpm and drop back to where it was running as set. The driving speed will not change, only rpm increase. I can duplicate the same jump by hitting the CANCEL button and instantly hitting the RESUME button, allowing the engine to increase rpm's before catching again. Vacuum lines were replaced back in the summer when AC would not work and Cruise would show some of same symptoms in the summer, solving that problem, but not this. Any ideas of what to check?
  • kyfdxkyfdx Posts: 64,817
    That sounds more like the torque converter locking and unlocking.... than a problem with the cruise control.. (not an expert)


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  • Only does it when cruise is on. I have been driving from Tennessee to Houston TX several times and I can watch the outside temp gage when traveling south, as it gets above 40 degrees, problem goes away. When I return, as outside temp goes to 39 degrees, jump comes back. I turn cruise control off and hold rpms constant, it never jumps, runs smooth. Can not find any problem. Any other suggestions?
  • haniwowhaniwow Posts: 1
    edited January 2011
    What was the part? My cruise control, doesn't work either and airbag light is on all the time... want to bring it in monday, but with my own info. Thanks so much.
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