Hello gang, I haven't drove the discovery in 5 weeks as I was having $2800 worth of work done. Anyways, my daily car had a screw in the tire when I went to leave work just now so I drove the rover home. It seemed fine and then going 45mph the tc light came on and a medium loud humming and then the truck was hard to steer. It happened 4 times in 5 mile trip home. At 15 mph to 50. I have to drive this thing tomorrow in rush hour and it feels unsafe, any help asap greatly appreciated!!

 

The humming and tight steering confuses me. I can't relate the two.

Faults in the steering system shouldn't trigger a TC sensor unless it's an angle sensor fault which these truck do not have. The TC light illuminates when the TC control system activates basically the sensor "sees" a loss in resistance and pings the control module for assistance. The control module in return sends gentle pulses to the brakes to control the offending wheel/s.

Maybe, the sensor accumulated dirt from sitting and is dulling the signal causing a false positive.

 

Thanks coors. From all my reading up I believe I'm simply getting traction turning on whenever it wants to and causes the truck to brake and slow down and steer weird due to braking at one or two wheels only. Now I just have to figure out what's causing it. This is the first time it's been driven with the new 32 inch tires and the alignment hasn't been done yet, like I was saying, only drove it home due to a flat on my Taurus. Anyone think abs wheel sensors should be checked first?

 

Alright so driving to work this morning...its left turns only. At any speed. Light comes on and I hear grinding sound and it smells strong of metal to metal. The rotors and pads are 5k miles old and look fine. Grrr??

 

YHmmm. You're going to have to pull the wheel for a closer inspection. I wonder if the sensor became dislodged.
Do you have the the appropriate equipment to check for ABS codes

 

Sensor could be faulting, wires could be frayed, corrosion in the connection. The hot smell is the brake pads dragging. I bet if you do a touch test that wheel will be hotter than the others.

 

It is a wheel sensor. I'm having the same problems right now. I got a new Sensor to put in for the code I got. But just had to drop my front drive shaft. Centering ball went bad again... So not really worried about the Sensor at the moment. Driving around with my diff locked anyways until my new drive shaft comes in. I'll post back when all the lights go out after i fix it all! If you have the capability of a locking transfer case do it and that will make your abs system not work and cause this problem.

 

I'm curious, could you just unplug that wheel speed sensor or perhaps the ABS unit or ABS relay to make it driveable? That would of course give you the three amigos, but judging by how the three amigos work that should work, right?

 

I was having similar problems, except worse. If you pull the ABS fuse, it makes the truck drivable til you fix the problem. The brakes function normally, just no ABS. Also, you get a x-mas tree of caution lights.

As I recall, tres amigos, followed by SES after a certain number of miles.

 

Yeah, thats your TC engaging. When it engages it sounds like an old sewing machine under your hood and you might have some pull in the front end depending on where it's gripping. Question is "WHY". There are a few ways to disengage it, you'd be running with your amigos on but that'd no big deal.