2000 Jeep Grand Cherokee - Answered Questions & Fixed issues

https://www.fixya.com/cars/r26142776-want_bypass_vehicle_security_system ..

I would check to be sure that the timing chain hasn't jumped at all ..

On these issue, there are few solved help links for troubleshooting the issue easily.-------

Click the link below: ---

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

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Car will not go into 4WD high or 4WD low?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

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No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

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4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

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2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

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Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

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4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

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2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

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4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

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4x4 will not engage on Ford F150?

http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

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Dodge Ram 4x4 light keeps flashing

4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

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Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

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These details will help.

Thanks.

It is not always the T-Stat or sensor! Sorry to revive this old thread, but I have not found this answer anywhere and had to figure it out myself. I Thought it might help somebody else, particularly when a lot of us are not driving as much these days. Low Battery Voltage, due to short trips (Incomplete charging or weak alternator), may affect P1281 and misfiring too. I have had a random misfires for so long that I just clear the codes from time to time. I might not see them for weeks or month at a time, sometime every day or so. Serendipitously, I was going to be away from my jeep for a week and put it on a NOCO 1 amp Minder/Desulfator/Charger. When I got back, I cleared the codes and found P1281 which was new. After charging, no new codes have popped up. So, I started plugging it in every day and my intermittent start up fast idle went away. My temp gauge was not randomly reading low (which was a recent development fitting code P1291) Misfires never seemed to be cylinders that shared a coil (last time it was 1,4 and 6) Over the years, I had already changed the plugs twice (once back to the factory recommended plug), checked the injector circuits, replaced the injectors. Just before last inspection, I Changed the fuel filter/regulator (which magically cleared the codes by itself immediately!) Replaced the Cam sensor (I had a code at the time, my first one several years ago) It is an I6 and has always seemed rough to me. I chalked it up to being and I6, LOL. But my wife felt the difference with the new Filter/Regulator! It has only been 10 days of keeping the battery topped off, but with the temp gauge behaving I am cautiously optimistic. I have read that code P1291 does not always show up under these conditions, So we will see. I know from experience that my 1998 Ram 360 would not idle after it needed a jump until it ran a while with a foot on the gas. My 1998 ZJ 318 is the same. I chalked it up to the voltage being too low to fire the ignition. But I figured once it was running there would be no problem and in those V8 vehicles I never got a misfire or P1281 code. When I would get Misfire codes in my I6 2000 WJ, it always seemed to be right around when it would be going into closed loop, sometimes going in to limp mode just as I was trying to get on the freeway, that was always fun. So IF it comes down to short trip incomplete battery recharge I will be happy, but sad that it hadn't occurred to me sooner.

if the engine turns over but just dont fire up it sounds as if the fuel pump is losing prime ....have the fuel pressure tested...you may need to leave it overnight so the shop can test it first thing...the pump may be going bad

2000 Jeep Grand Cherokee Service Repair Manual INSTANT DOWNLOAD get your car fix right now

I would say the alternator. The fluctuations when it is running indicate that the regulator inside the alternator is worn out. The overheating is probably because the cooling fan is not running fast enough or at all.

This is code for WJ. P0011 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1))

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

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

The ignition module is located underneath the distributor cap, while the ignition coil is mounted typically on the engine block on the same side about 6-9" away. The center spark plug wire will lead to the coil. The module can be found by removing the distributor cap, there is a wiring harness that plugs into it.

Jeep Cherokee Questions - where is the ignition control ...

Try bleeding the slave cylinders.

Does the noise sound as though it is coming from either the front or rear axle and does the noise change as your speed increases. If so it sound as though your axle is whining requiring overhauled if really bad.Common problem

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.

Take some lube spray and spray the entire lock assemblies. You may need to take the door panels off to do a good job. With the panels off you can watch and see what is happening.

Did you replace the thermostat also?

The smell is way to much fuel in the exhaust and the catalytic converter is overwhelmed, it will overheat and quite possibly start the truck on fire if you don't fix the over fueling problem.

Try squeezing as you pull, be gentle

I have seen jeep TPS - throttle position sensors cause a surge like you describe , but not with injector circuit code's . The PCM - engine computer controls the injectors by supplying a PWM - pulse width modulation ground . Checking the electrical circuits for those injector's would be the thing to do . Do you know how to test electrical circuit's ? Plus checking the drivers (transistors ) inside the PCM should be done . Could be a wiring or computer problem or even those injectors could be failing . How to Check Fuel Injector Resistance with Multimeter How to test fuel injector circuit with basic tools open control wire