Jeep Grand Cherokee - Recent Questions, Troubleshooting & Support


I would try finding all the ground wires on the vehicle and cleaning them to make sure they are getting a good ground. 12 volt systems are very sensitive to bad grounds. I seriously doubt that turning on the light had anything to do with it, but a bad ground could give low voltage to the radio, relays, etc. and make them turn on and off. The more things you turn on the more the bad connection will give problems. I hope this helps.

1994 Jeep Grand... | Answered on Aug 14, 2018


Its a matter of taking each component out of the picture(unplug ,if possible) one at a time and replace fuse..But before i did i would pull the fuse box far enough out to check for burnt or pinched wires behind it...Good Luck!!!!

2002 Jeep Grand... | Answered on Aug 09, 2018


Replace the blower motor relay, it is defective and sticking internally, causing the heater motor to keep running.

1997 Jeep Grand... | Answered on Aug 04, 2018


You will probably find the oil level in the exchange box is low and the sensor is activating.

1995 Jeep Grand... | Answered on Aug 04, 2018


try disconnecting the NEGATIVE cable on the battery for 10-20 minutes. re-connect it. start the vehicle and drive it for a few miles to let the pcm reset. (make sure the key is off and out, just to make sure you don't fry something when you remove the negative-black wire cable!!). don't short it against the positive-red!
make sure the negative connector (on the cable) is isolated from the frame, or it will still be grounded! wrap some plastic around it, or something!
good luck!

1994 Jeep Grand... | Answered on Jul 23, 2018


Sounds like the blend door actuator. It separates the driver and passenger side from getting air on the AZC system. Here are some instructions on replacing it:
The passenger side blend door actuator is used on all models equipped with Automatic Zone Control (AZC). This actuator is located on the front of the HVAC housing to the right of the floor panel transmission tunnel and cannot be removed from the passenger compartment without instrument panel or HVAC housing removal.

NOTE: This procedure is for AZC Systems (Passenger side only).

  1. Disconnect and isolate the battery negative cable.
  2. Remove the glove box door. See: Body and Frame\Interior Moulding / Trim
  3. Remove the lower I/P glove box door surround panel.
  4. Remove the dash assembly. See: Body and Frame\Interior Moulding / Trim\Dashboard / Instrument Panel\Service and Repair\Instrument Panel Assembly
  5. Remove the HVAC assembly. See: Housing Assembly HVAC\Service and Repair
  6. Unplug the wire harness connector from the blend door actuator.
  7. Remove the 2 screws that secure the blend door actuator to the HVAC housing.
  8. Remove the blend door actuator from the HVAC housing.
INSTALLATION - AZC (Passenger side only)


  1. In stall the blend door actuator on the HVAC housing and tighten the two mounting screws to 2.2 Nm (20 in. lbs.).
  2. Plug in the wire harness connector to the blend door actuator.
  3. In stall the HVAC unit into the vehicle. See: Housing Assembly HVAC\Service and Repair
  4. Install the instrument panel assembly into the vehicle. See: Body and Frame\Interior Moulding / Trim\Dashboard / Instrument Panel\Service and Repair\Instrument Panel Assembly
  5. Evacuate the HVAC system.
  6. Recharge the HVAC system.
  7. Connect and the battery negative cable.
Hope it helps! If you need more, just send me an email at familyguy77351 at yah I wil be glad to finish helping you with more detail.

2000 Jeep Grand... | Answered on Jun 18, 2018


The best solution you'll get from books at www.reliable-store.com

These are books containing info on repair, service, troubleshooting, parts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. forklifts, boats, excavators etc

Jeep Grand... | Answered on Jun 18, 2018


Code 12 - BAttery disconnected recently
Code 11 - Oxygen Sensor faut code
Code 55 - End Test

Hope this helps.

1997 Jeep Grand... | Answered on May 27, 2018


ecu is taking up more voltage as a back up reserved. Try removing the battery once it is loaded in the evening and put it back in the morning and try to start.Trial and observation will pin point the main cause.

2008 Jeep... | Answered on May 25, 2018


The very 1st thing you do is get an OBD2 code reader and check for system fault codes.

Jeep Grand... | Answered on May 24, 2018

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