Jeep Grand Cherokee - Recent Questions, Troubleshooting & Support


Open the door panel cover and grease or lubricate the window lifting mechanism. Apply rubber grease to the rubber rails.

1996 Jeep Grand... • Answered 16 hours ago


you have dash lamps acting funny? diesel engine? or gas, and what displacement? 4.0 , 4.7 P1686 did the immo lamp glow. did you scan the PCM and see if 1685 (wrong key code) 1686, rigth out of fsm Trouble Code: P1686 4.7L No SKIM Bus Messages Received Number of Trips to Set Code: 1 PCM details. Trouble Code Conditions: Engine started; and the PCM did not detect any MIC (I/P Cluster) messages over the Data Bus circuit for 20 seconds. Possible Causes:
  • Data Bus circuit from MIC to the PCM is damaged or it is open
  • Instrument Cluster is damaged or has failed
  • PCM unable to communicate with the Instrument Cluster
  • PCM has failed
this means, the PCM can not talk to the I/P cluster puter. comm fail. even wilder guess is PCM talks to KEY via cluster so if cluster dead so be key. bad fuses ? the FSm dont cover defeating any alrarms or IMMO less crooks read it. so...... google it.

1999 Jeep Grand... • Answered on May 04, 2021


relay, way assume there is one? did you SCAN it yet ? got PCI comm errors. or door module errors? why not post symptoms and ask for help. that works not guessing... in 99% of all cases. WJ jeep covers all this in the FSM book, or at alldata.com ending the guessing game. fast. chapter 8 is wiring in the jeep book. next is power window . 8N- page 33 is there. theory of ops. are all windows dead, or just one, must I ask>? FSM chapter 8w-60 -2 shows, NO RELAY. it has 2 modules the driver module DDM and passenger module, fuses and motors. now the bad news. the BCM brain, sees what buttons you press, then the BCM sends a digital message stream to the MODULES the modules then do as they are told. via the PCI network. (that is how it all works with min words) so what does the shop do. well he scans first. (after checking all fuse) PDC fuse 12 , 50 amps. (first if all windows are dead) now on page 4 they show RHD and export models with no brain that is , just door switches that go to motor direct, and again not one relay, in this system.. BCM top left PCI bus below it. driver door module getting commands. (serial) look ma' no switches or relays. (usa cars) 24778773-ylqjikjamog5a0is5ho2uz3h-1-0.jpg what is inside the module is a jeep secret. the BCM does the magic where by you command driver window down and it does so automatically. this is software doing that in the BCM. a big clue if your jeep has this BCM system. show above. ill now quote the FSM book The most reliable, efficient, and accurate means to diagnose the power window system requires the use of a DRB scan tool and the proper Diagnostic Procedures manual. The DRB scan tool can provide confirmation that the PCI data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the power window motors are being sent the proper hard wired outputs by the door modules for them to perform their power window system functions. if you dont have this option DDM ? then the fuse is blown or the switches are bad, super easy to diagnose, ask. how.

2003 Jeep Grand... • Answered on Apr 30, 2021


sorry not understanding the Azc fault please enlighten me as to what it is

2000 Jeep Grand... • Answered on Apr 24, 2021


Hi Joko,What you are describing is a failure of a main circuit. The first thing you should check is yo make sure that your battery is in good condition and that the cables are clean and tight. Let me know if yu find anything wrong there. Then there may be another main circuit problem. Check all of the fuses in your fuse block in the engine compartment. If any of these fuses are blown, it will usually cause several things to not work. If you find any fuses blown, DON'T REPLACE IT YET. Let me know WHICH fuse is blown and I can help you find out why it blew so you can get the problem fixed.Get back to me on this and we will continue.-Dave (dttech)

2002 Jeep Grand... • Answered on Apr 23, 2021


The clicking sound is an indication that the battery is almost dead, and will not activate the starter any more. When is the last time the vehicle was tuned up and serviced? How many miles do you have on it? You can't drive it forever and expect that it's going to always start and run properly. You need to have it checked out by a qualified mechanic - the symptoms you have sketched out here could be almost anything. Do yourself a favor and invest a few dollars to get some reliability back in your vehicle, or maybe find out that it's going to cost a lot of money to keep it going. Then you can make an informed decision on what to do next.

1994 Jeep Grand... • Answered on Apr 22, 2021


does it have the 4.0L motor ? if so open the hood stand off to the side where the exhaust bots to the head and have some one rev it up quick if its coming fron under the hood by the engine the exhaust manifol is cracked. The 4.0L jeeps have had lots of problems with this.

1998 Jeep Grand... • Answered on Apr 21, 2021


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1995-96 V-8 engine vacuum diagram-1997-98 V-8 engines similar; be sure to check the VECI label in the engine compartment

Also I have a GC, 1993, and I noted that besides maintaining a vent hose that is not going anywhere, just this subject with a ribbon next to the front suspension.

Hope helps (remember rated this).

Jeep Grand... • Answered on Apr 20, 2021


What u mean that it cannot be dublicated in the shop?

2007 Jeep Grand... • Answered on Apr 03, 2021


Did you try the instrument self test? With ignition switch in off, press the odometer reset button and while pressing it, switch ignition in run. Now all indicator lamps will come on and you can release the button. All indicators will run to full scale and should return to normal position. The instrument cluster gets the speed information from the PCM (powertrain control module). The PCM gets the info from the ABS controller. I would pull the fuse from the ABS controller and see if it will change the speed indication. If it does, then the problem is with the ABS controller, if it doesn t, then most probably the instrument cluster is faulty.

2004 Jeep Grand... • Answered on Mar 24, 2021


am i understanding you correct that you need a picture of serpentine belt routing ?? if so here you go if not please let me know what exactly your looking for glad to help jamiesturm29_0.jpg

1997 Jeep Grand... • Answered on Mar 15, 2021


Defective radio/clock power supply

Jeep Grand... • Answered on Mar 12, 2021


either yhe switch ia bad or the window moyor is either jamed or burnt out (ie) brushes in motor.

2000 Jeep Grand... • Answered on Mar 10, 2021


Likely a ground has corroded and failed. A simple test is to take a set of jumper cables and create a temporary ground from the engine block to battery negative post. If things start working, then it's a failed ground.

Jeep Grand... • Answered on Mar 05, 2021


Hi have a look at this video, https://www.youtube.com/watch?v=-hSKhMs9VTM

2004 Jeep Grand... • Answered on Mar 05, 2021


The only way to know for sure is buy a manual gauge and test it. Hook up the hose with the treaded makes end to the block. Usually located above the oil filter if your under the car. There should be a plug and wire attached to it, that your oil pressure switch. Take that off and attach the manual gauge to it. Turn your car on and let it idle, for like 15mins. Depending on how cold it is outside, and your oil viscosity of your oil, like how thick your oil is. 5w20 normal and 10w30 is thick. You want your oil to warm up so you can get a proper reading, look in car manual for oil pressure specifications on the reading.For example my 95 honda civic says at idle it should read 10psi and 3000 rpms on your tachometer in your the gauge should read 50psi. If all is good it might the gauge in your car. Good luck.3_2_2021_5_19_14_pm.png

Jeep Grand... • Answered on Mar 02, 2021


The same oil that is listed for your region in the owners manual. If in doubt, ask at a main dealer or google it.

Jeep Grand... • Answered on Mar 01, 2021

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