Thread: Traction Control Issues in a 2010 Defender Puma

Originally Posted by HardCharger

Did you plug in diagnostics? If so, any trouble codes?

I only suggest this as when my traction control ( 2.4 Puma ) was activating during random times which eventually resulted in lights on the dash which reset themselves after shutting off the engine, I plugged in my IIDTool and it showed a problem with the front left side wheel speed sensor.

After trying a new sensor and still having the problem, it was later determined that something was fouling the ring that the sensor was reading. Upon taking apart the necessary bits, we saw that the one shot grease, which was a lot thinner than it was supposed to be, was all over the CV and the ring the sensor reads. Cleaned up and refreshed the grease on the CV bearing and adding appropriate grease to replace the thin one shot, put everything together and the problem disappeared.

Just in case this helps you.

Originally Posted by Robmacca

I had some bad experiences when 4WDriving and trying to reverse back down a hill I didn't make it up. When reversing back down I was trying to go as slow as I could (ie: Clutch out & in gear & foot on the brakes as you do) & I found the ECU fighting against me and wanting to increase the Revs, thus increasing the speed - very dangerous when reversing down very steep hills... I found disconnecting this plug solved that issue

I've not experienced that in my MY10 puma (130 so no ABS). I've found myself reversing alot in low range and never felt the anti-stall kicking in. AFAIK the anti-stall is load and rpm sensative. Ie the engine/ecu senses additional load on the engine and drop in rpm the anti-stall is triggered to bump the rpm. Reversing shouldn't trigger anti-stall because there is no load on the engine and rolling backwards should increase rpm relative to speed. The only scenario i can think of is if you were so heavy on the brakes that you were dragging the rpm down into a stall. In that case, that's driver moderation of the brakes not system error. You might have to trust the car will find its equilibrium. I find the 130 wants to roll away on me at that moment you release the clutch and before the engine compression kicks in. its a split second of "oh ****" but if i trust the car, it arrests the speed under engine compression/gearing and after that the reverse speed can feel too slow at times. Also i'm running 4.11 gears so the mechanical advantage of gearing is better than 3.54s and that also means my gearing and engine torque makes it harder to pull the rpm down into a stall. From all accounts the 4bd1 is hard to stall too due to the torque off idle.

as for the other posters with finicky ABS, one of the benefits of not having ABS in a 130. Just one thing less to go all "defender weirdness" on me. I'm getting to that age that a 200tdi is too sophisticated to go touring in.