Dec 112019

2004 Jeep Grand Cherokee

I have a 2004 Jeep Grand Cherokee Special Edition 4.0L Straight 6 4WD loaded. I have a parasitic draw and I need help to find it. I’d like help with the non intrusive method which is to check voltage drop across each fuse without having to worry about vehicle waking up.

I was told a few things and I replaced the alternator, battery and computer but issue still remains. I have to disconnect the negative battery terminal every night so it won’t drain the battery but this resets everything when I reconnect it. Hard to pass NYS inspection when none of your monitors are ready. 200 miles later only the EVAP monitor wasn’t ready and I passed.

There is nothing ON that I can see in the interior or exterior. So basically I just need to know how to set up my multimeter. Where and how to test fuses to narrow down which circuit and fuse or relay is causing the draw. Also is there a way to check relays in the junction box under the hood without pulling them out and causing the computer to throw a code? What about the maxi fuses? They are a bit bigger with a clear cover on them can you test these as well?

It’s beginning to be a hassle to disconnect the cable every time. I thought about installing a kill switch but that doesn’t really solve my problem so short of buying a smart battery charger or maintainer to keep the battery charged overnight I don’t know what else to do. Any help would be greatly appreciated. Thanks.

A few things I have found over the years that cause this.

  1. Glove box light staying on, examine the vehicle at night as it is easier to see if a light is still on somewhere
  2. Chewing gum wrapper lodged in cigar lighter/12V supply port
  3. Penny or dime also found inside cigar lighter/12V supply port
  4. Accessory left plugged in cigar lighter/12V supply port

Testing the MAXI Fuses will require removal. It is best to remove any fuse or relays to test it when considering there may be a short somewhere in the system. This will isolate the component being tested and keep from causing false test results. Set the Multimeter to continuity for checking the fuses.

Transmission fluid all over my front differential

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Sep 142019

I have trans fluid all over my front differential of my 1990 Jeep Cherokee Laredo.

Most likely cause would be from a leak coming from the transmission cooler lines that attached to the radiator. One thing to remember is fluid does not travel up hill. Keep that in mind when looking for the source. Top off the transmission fluid level. Clean the area all around and above. Operate and look for the leak. Once the leak is found make the necessary repairs.

I do recommend using a 8mm socket instead of a flat blade screwdriver to tighten your hose clamps. This will give you that little bit extra that you need to get it tight.

Will not turn over, just clicks 2009 Jeep Grand Cherokee

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Aug 292019

 Jeep Grand Cherokee

Sometimes will not turn over, just clicks. Battery is good and relays appear to be working. Has only done this 4 times in the last year and a half but getting more frequent.

First thought, Replace Starter.

In general if you hear one hard click, the starter needs to be replaced. If you hear several clicks repeating(click, click, click, click, click) the Battery is Dead/Weak and may need replaced. If the battery is close to 4 years old or older, replace the battery anyway.

How to Replace the Starter – 2009 Jeep Cherokee 4.7, 5.7

Starter, Replace
  1. Disconnect battery ground cable, then raise and support vehicle.
  2. Then remove heat shield clip and heat shield from starter.
  3. Next remove the starter motor attaching bolts and nuts.
  4. Remove solenoid.
  5. Disconnect all electrical connectors from starter motor and remove starter.
  6. Reverse procedure to install, noting the following:

a. Torque starter mounting bolts to 30 ft. lbs.

b. Torque starter B+ terminal nut to 108 in. lbs.

Blower fan stays on 2011 Jeep Wrangler 3.8 liter v6

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Aug 272019


When I lower my blower fan switch to off position it stays on low speed. I have a continuous knob not one with set speeds. Do I need to change the resistor or change the whole ac/heat control unit with the 3 knobs?

Lets take a look at the wiring diagram of the blower motor circuit.

Blower motor wiring diagram 2011 Jeep Wrangler


After looking at the diagram it would appear this vehicle uses a Power Module instead of a blower motor resistor. But this would be my first guess at to what needs to be replaced.

Manual or Automatic Climate Control?

Yes, both the Manual and Automatic temperature control heating-A/C systems use a power module to control the the blower motor speed. The power module uses a Pulse Width Modulated input from the A/C-heater control and a feedback signal from the blower motor to regulate the blower motor ground path. On both systems, the blower motor receives battery current through the Totally Integrated Power Module whenever the ignition switch is in the RUN position, and the blower motor control is in any position except OFF.

The blower motor can be accessed from underneath the instrument panel and is diagnosed using a Scan Tool.

How the Blower Motor Control Works

Driver side tail lights go out 2007 Jeep Liberty

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Aug 022019

Jeep Liberty

When headlight are on and I step on the brakes the driver side tail lights go out. When I let off the running light comes back on

This is common when a bulb has been replaced with the wrong replacement bulb or a loose ground wire. Let me give you an example of what I’m talking about. Two bulbs look the same but are not. A 3057 and a 3157 look almost identical, but rest assured they are not.

Grinding scraping noise 2015 Jeep Patriot

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Jul 302019

Jeep Patriot

I just bought a used 2015 Jeep Patriot from a dealership and after driving it for 4 days I’m now noticing a grinding/scraping noise coming from front end (tire area-both sides). It’s rotational (every time the wheel spins) and I only hear it at low speeds. The noise seems to stop if driving 40km/hr or more… looking for suggestions as to what this would be?

Sounds like it may be brake component related.

2007 Jeep Wrangler Sahara grinding in 2WD fix

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Jun 152019

4WD problem. I think. When driving it seems like the 4WD is constantly trying to engage. The Jeep will jerk back like something is hitting the tire and make a loud band sound. When in 2wd the Jeep will not drive and makes a grinding sound.

I think your right, a 4WD Problem or issue with the transfer-case. I would check the linkage adjustment to make sure it is actually being place into 2WD all the way and not binding up on something. This would explain the grinding.



2019 Jeep Cherokee Rain Sensing Wipers

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Dec 202018

Jeep Cherokee

There are conflicting reads that my 2019 Jeep Cherokee does/does-not have Rain-Sensing-Wipers. Anyone have access to dealership programmable options to check this out?

It is definitely available on the older Cherokees. I don’t know for certain if it is for the 2019. I wouldn’t think they would discontinue the feature though.  I will post this  so others may have a chance to post if they know different.

Code Ignition key cylinder on 2000 Jeep Grand Cherokee Laredo

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Dec 092018

J2000 eep Grand Cherokee

I was given a jeep without an ignition or key. I bought a new Dorman ignition with key. How do I code it without original key and ignition?

You can use any dodge key and code it to match or take your VIN# to the dealership to get an original cut key.

Model Year Model Year Skill Code Factory Time Labor Time
 Grand Cherokee ……………………. 1999-04 B 0.4 0.5
Additional Labor
Model Year Factory Time Labor Time
 To Recode Lock Cylinder,
  Add …………………………….. 1999-04 0.3