Unplug the CKP sensor and retest for proper gauge operation.Resolution:Replace the CKP sensor to correct.Details:Scan tool will show 'no response' to PCM (engine computer). Volt gauge is all the way to the left (low), but the battery is not discharged.Cause:The CKP (crankshaft position) sensor is shorted internally. Related symptoms: Fuel gauge shows 'empty', however the fuel tank is not empty. Leak is usually slow/minor.Vehicle:1993-1998 (ZJ) Jeep Grand Cherokee with 4.0L engine, 1999-2004 (WJ) Jeep Grand Cherokee with 4.0L engine, 1997-2001 (XJ) Jeep Cherokee with 4.0L engine, 1997-2006 (TJ) Wrangler with 4.0L engine.Concern:Engine cranks but will not start. Coolant will run down the case and under the carpet. Inspect the HVAC black plastic case in the passenger side footwell for evidence of leak. Vehicle will have no heat, but A/C will still operate.Details:Heater core is leaking. Hose splices are available at any auto parts store. Passenger side carpet may be wet/moist.Cause:The heater core is leaking.Resolution:Replace the heater core.Alternative/temporary repair:Locate the 2 heater hoses going to the firewall underhood. Related symptom: Odd smell from A/C dash vents. Read more: How to Program the Remote on a 1996 Jeep Grand Cherokee ' eHow.Vehicle:1999-2004 (WJ) Jeep Grand CherokeeConcern:Coolant loss/have to add coolant periodically. This must be done within 20 seconds of programming the last remote. Turn the key to the "Off" position and turn the ignition on immediately. If not, manually re-lock the driver's side door and repeat steps 5 and 6 using each remote you would like to program and then continue. If you are only programming one remote, jump to the next step. When the driver's side door unlocks, you know the remote has been programmed correctly. Point the remote at the receiver (located by the little bulb on the car ceiling) and hold down the "Lock" button for up to 5 seconds. Put the manual key into the ignition and switch it to the "On" or "Run" position, whichever applicable, without starting the engine.Ĭontrol any distant PC remotely. Keeping the door open, lock it using the manual lock on the door itself. Unlock all of the Jeep Grand Cherokee's doors and open the driver's side door.
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