Checked voltage 12.3 engine off, 14.0 engine running. New xyz switch. Terminals are tight and corrosion free. New altenator. Heard that sometimes it could be the crank sensor but i thought that was for only no starts, mine starts fine. New tranny fluid. Has a P0722 code i think alldata said its no voltage from speed sensor. Would that cause all of my problems? Would I have to put it on a scanner to determine which speed sensor is bad? I'm new in the world of LR's but even with all these problem i love mine. HELP! Disco Mike can you give me any suggestions please i am desperate!

 

I had this one time and it turned out to be the 150 amp fuse in the engine compartment fuse box. It's a large copper pronged fuse with a small plastic center piece with 150amp marked on it. check and or clean it...

 

Everything looks in order as far as the fuse goes. I think it might have something to do with the wheel speed sensors. These are the codes I pulled:
P0722-Wheel Speed Sensor
P0741-Torque Coverter Lock-up
P1590-Rough Road Signal Fault
It looks as though the wheel speed sensors could contribute to these DTC's. When you think about it if the car doesn't know how fast or slow the wheels are turning that could throw some codes. The scanner i used did not have a live datastream but maybe the Solus at work does. I guess I'll try that tomorrow and see what happens.

 

Still the samething. Tried A different scanner and it said that P0722 is no signal output shaft speed sensor. Anybody know if that would cause the truck to stay in 1st gear till about 20mph and then go into 3rd gear limp mode with a jolt? Or am I lookin at replacing a tranny? Some people say that the trannys on these things are bulletproof it's just all the electronic garbage that make them a pain. I really wanna keep this LR but I don't wanna thow money at it. Anyone know a good local LR shop around florida?

 

With the output speed sensor not sending a signal, that could be your whole issue. Fix that first then get back to us.

 

But my speedo works. Doesn't that mean it's working?

 

Isn't the speedo mechanical, while a sensor is electronic? I would think one has nothing to do with the other. As I understand it, with a malfunctioning sensor, the transmission tries to save itself from possible damage (by going into limp mode) since it doesn't have all of the usual inputs to tell it what is going on. Doesn't necessarily mean that there is anything wrong mechanically, just that the "brain" isn't getting any signal from the "body", so it starts to panic.

 

ok, I'll get the sensor switched out first then I'll get back to you guys. But what if that doesn't take care of the situation? Well I guess one step at a time.