The Jeep KJ Cherokee has a factory TPMS (Tyre Pressure Monitoring System), this is all very nice but they arent known for being particularly reliable, some of us simply don’t want this function, sensors need to be replaced by genuine and if you change to a steel wheel I believe the TPMS wont function anyway.
In the U.S its a mandatory (legal) requirement and a dealer prolly wont disable this function. In Australia its not a legal requirement. I was told that “only a dealer can disable this function”. This is not entirely correct, but you will need access to a diagnostic tool that is capable of doing the programming function for each tire sensor.
In the pic below I am using the most awesome Snap-on Sollus Ultra scan tool (worth every dollar I paid). Once into the program function simply program in for each sensor listed the code 22122212 your done baby! Now enjoy no errors on the EVIC or no idiot light.
On a Jeep KK Cherokee (the model after the KJ) its uses a more standard type of computer programming, as in a simple in out code, so use the code 00000000.
As we all know, you don’t re-use nylon locking nuts….
The retaining nuts and bolts for the prop shafts on all Land Rover Series, Land Rover Defender & Land Rover Discovery 1 & 2 models are a 3/8 UNF thread. The original factory nylon locking nut thickness are a odd thickness. You can either purchase standard thickness retaining nylon locking nuts or thin nylon locking nuts. In most applications using the standard (but thicker than the original Land Rover nuts) will be fine.
On some applications such as on a Land Rover Discovery 2 front output prop shaft the bolt length are too short and the thin nylon locking nuts must be used. If you use the thicker nuts the thread on the bolt wont pick up on the nylon part of the nut enough to secure it.
The picture below explains it all. From left to right
Thin 3/8 UNF, Land Rover 3/8 UNF, Standard 3/8 UNF
On the later Jeep KJ Cherokee CRD 2.8lt it uses a later black (plastic) style fuel filter head, this head is also prone to leaking. If replacing the later black fuel filter head you need to wire in a resistor to the fuel filter head temp sensor. This is pretty easy.
The pics are in order and have a description. Keep in mind this mod is for Australia where a fuel heater is not needed.
The Jeep KJ Cherokee CRD fuel filter head is prone to leaking, both on the early metal looking style and the later black plastic style. The genuine replacement head are expensive. The symptoms are as listed.
Stalling once started.
Random cutouts while driving.
A code may or may not be listed, if it is it will be something along the lines of “P0093 = Fuel rail pressure malfunction positive pressure deviation”
The pic below is the replacement fuel filter head that can be picked up from most filter suppliers. In Perth W.A I use Filters Plus. The cost of the head is round $50 and is a permanent fix for this common issue.
EARLY FILTER HEAD: On the early Jeep KJ Cherokee CRD (thats the metal looking head) you need to extend the length of the fule hose that feeds from the outlet of the head that goes to the intake of the high pressure pump.
LATER FILTER HEAD: On the later style of filter head (this is a black plastic looking one), the original fittings and fuel hose can be used. This pic below is of a later fuel filter head replacement job.
On the later style of filter head, you will need to wire in a resistor as a replacement for the fuel temp sensor, this is cover in another post, look for FUEL FILTER HEAD RESISTOR MOD”
In both the early and later style filter head, once replaced it will use the fuel filter as used on the later style. I use BALWIN BF7970
Specialist repairer of all model Jeep & Land Rover