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Jeep Grand Cherokee Maintenance and Repair



  • I simply drilled a 1/4" hole through the back of the plastic collector box, (the circle at the bottom of the V under the A/C unit, inside the car) and ran a rod through the drain from inside the car. Then covered the hole with a piece of "moulding tape" which you can get just a short piece at your local body shop. It has held up all summer very well, and no more water in the back seat.
  • I have a "98" JGC that had a similar problem AFTER a $2000 trans rebuild. Turns out that ATRA (Automatic trans. rebuilders association) sent out a bulletin that states that the trans cooler return line has a check valve in it, and it should be removed, to avoid rear planetary failure due to overheating. Problem is, once you remove the check valve, the convertor drains down over night, and has to refill in the morning. After two trips back to the rebuild shop, and threatening to make the problem public via our local tv station, they put the check valve back in, and things seem to be OK, for now.
    Sounds like you may have a stuck check valve, and the rear planetary set IS overheating which is causing fluid failure, and the sticky down shifts. Even though the Jeep repair shop estimated a higher cost to rebuild my tranny, I spent more in the long run by trying to save a few bucks. By the way, Jeep Corp. service hot line did not know of any service bulletins regarding this check valve failure, even though ATRA claimed it came straight from Jeep. Good luck.
  • HELP!!!!!!
    I had a little fender bender last night. I have a 98 Grand Cherokee 4.0 in line 6, and after being rear-ended now the truck won’t start.
    I have checked all the fuses in side the cab and in the engine compartment, checked if the fuel pump was not working, checked cables connections,
    Un-plugged the battery terminal from the battery to see if the computer reset it self.
    I still haven’t got it to start; does any body know what the heck is going on????
    Reply A.S.A.P.
  • I have a '93 JGC with 5.2L that just won't make it back on the road. After sitting for 4 months after a host of engine problems took it out of service, crank position sensor, ignition coil, timing chain slack, oil leaks, now that the engine is running perfectly it won't drive in anything but 4low or reverse! The vehicle was driving fine, as far as the transmission was concerned, before the hiatus but now won't go into 4hi. It makes some sounds like it is attempting the process for a sec or two, and then gives up and won't go in. The vehicle is just shy of 300k miles, and I'd hate to mindlessly rebuild the tranny or transfer case without ruling out electronics. Anyone with any ideas/experiences would be greatly appreciated. :cry:
  • tidestertidester Posts: 10,110
    I recommend posting your message in the "No Start" Problems discussion. Electronic Gremlins: Electrical Problems That Are Driving You Crazy may also be helpful. Good luck!

    tidester, host
  • Update: I was misinformed... apparently it drives only in 1st gear, in both 4hi and 4low. It has the 46RH transmission - fully-hydraulic.
  • wal4wal4 Posts: 4
    Good luck my friend I'm living your pain. I just paid 560.00 to have the Trans Governer pressure sensor replace for that same problem. And a week later they tell me that my trans needs to be rebuilded. 2300$ smacks.


  • wal4wal4 Posts: 4
    What's new, the transmission from hell If your engine light comes on run to the dealer or try to sell your Jeep Grand because it will run you about a grand to get it fix. 1st gear 2nd gear no gears. two days and 2300.00$ later hopefully I'll be driving again.

  • I have a 2002 JC and I am going through your exact problem. 5 days after spending $1300 on the 60,000 mile maintenance and a new Trans Governer the car suddenly shifts into Overdrive of which I can't push the button to turn it off. Next the Trans Heating sensor goes off. I am waiting to see what the damage will be. Was any of your repairs covered by warranty? :mad:
  • I have a 99 JGC and modified the housing below the headlight. I took the headlight out and cut out a hole in the floor of the black plastic housing creating an access to the relay. Makes it a lot easier to replace next time!
  • I've had the same experience, but no advice. Differentials checked, transfer case checked, universal joints replaced, steering damper checked, rear wheel bearings replaced, new tires ... same problem. Wuhm, wuhm, wuhm, wuhm .......
  • 2005 Jeep Grand Cherokee Limited 5.7L 20k

    I appreciate any assistance you may provide. I recently purchased the above vehicle and have been very content with it. However, recently I have noticed a squeaky noise when I hit a slight bump, emanating from the rear right quadrant of the car. It seems like it is around the right wheel. IN other words, as the car bounces, it squeaks with the bounce....a lot like jumping up and down on a bed. We brought it to the dealer (under warranty) and they lubed it, but the problem remains. Any suggestions or ideas about what might be wrong?

    Thanks for your help!
  • I hear the same noise on my 2005 GCL Laredo. I haven't gone through all the possibilities though such as removing the trunk cover.
  • Hi There...

    I have 1999 Grand Cherokee and today I got the similar problem and symptoms,

    engine cranks but won't start, gas gauge reads empty, no fuel pump sound on ignition start, did you ever find out the cause of the no start?

    I heard the crank sensor is a possible cause......what was your problem?????
  • Hi there

    Did the crank sensor do the job ? Where crank sensor located ? How did you replace it?
  • Further to my no start problems....on the instrument panel there was an ignition key circle and check gauges sign, as well as gas gauge empty and on fuel pump sounds
  • Did you have any problems with the ECM module after your modification to the plug?
  • I am having the same problems with my Jeep. It appears that this has happened before as the hole and plug are already there. I pulled the plug out but can't seem to dislodge the obstruction. I have used compress air etc. but still no go! When I prod with a wire through the hole it feels as if there is a rubber hose on the other side. I guess I don't know which direction I should be going with the wire as I don't know where the drain hose goes? I sure could use some help as my floor board is standing in water and smells!!
  • I have a '95 JGC with 144k miles on it and I just had the water pump replaced after it over heated a few weeks ago because I hadn't been checking the fluid and the anti-freeze exploded in it and I opened the hood and there was just fluid everywhere, I let it cool down and tried to drive it home but it stalled out not even half way there and would not start again. I replaced the thermostat and that helped the overheating, but it still dripped a little anti-freeze on the ground once in a while. We replaced the water pump and everything was fine for about a week and just today something with the oil exploded and I looked underneath and there was just oil all over everything and I can't find where it is coming from. Anyone with this problem or any help, please any of it.

  • wal4wal4 Posts: 4
    I wish my problem happen at 60,000 . I'm not sure if it's covered, my warranty was up at 75,000 miles. My problem started that way. The overdrive light will go out by turning your car off but don't drive it go straight to the dealer. The trans is overheating. It's not your overdrive button. Don't TAKE ANY CHANCES. Please let me Know what they found. I hope one day we will all be part of a class action case and get all the money back. :mad:
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