4wd Light

[66yostagea]

Hi Guys,

I've been a bit quiet caus of my shoulder reconstruction. (ouch!)

Went to Brisvegas yesterday, about a 100k. A few times I hit the O/D button in traffic tolessen the need

to brake.

I then noticed that when I backed off on the Freeway there was NO apparent engine braking nor any lossof revs, and the feel was sort of lumpy instead of smooth. Its an auto.

Later, maybe 10k, I noticed the 4Wd light on, the steering wheel covers it sonot sure how long it was on.

Still experiencing the "lumpy" drive feel. Got to Bris city and at a red light she cut out, but immediately restarted. The 4WD came on again.

Got to the Motel and parked for the night. Next morning no 4WD light. All systems AOK. Drove home, and all over today, noproblemo.

Any ideas???

Incidently, the Motel had one of those stacked car parks. I had 4mm clearance between the roof rails and

the upper deck. I took six attempts toget the Stag in, I even had to fold the RV mirrors in to make it fit, a guy in a Caprice in the next bay gave up and drove away. I wont be staying there again.

Edited February 13, 2007 by 66yostagea

[captinsane]

Lumpy feel... not just like when you are running it in constant AWD? (that little S button left of the steering column...), though that has nothing to do with why your 4wd light has come on??? - ...

I just know that my power button keeps staying on sometimes when i start up the car - completely random...

[yokotas13]

THATS what that button does!!!!

[Ska]

Hugh, check the ATTESSA fluid, there is a small tankfor it in the boot, drivers side, behind the two little covers. Two bob nothing it's low, as I have had the same issue with the light because of that, but that does not explain the"lumpy" feeling though...........

[66yostagea]

Hugh, check the ATTESSA fluid, there is a small tankfor it in the boot, drivers side, behind the two little covers. Two bob nothing it's low, as I have had the same issue with the light because of that, but that does not explain the"lumpy" feeling though...........

Yep. I'm in to that, level is fine.

The lumpy bit may not be the best description.

In a manual, when you back off, you get a positive braking effect from the engine. Right?

In an auto you get braking, but not to the samelevel of decelleration. But the decelleration is smooth.

When the light was on it felt sort of disjointed, and when accellerating again it felt like the torque converter was

either not picking up smoothly or the lock upmechanism was somehow malfunctioning.

When the light is on, does it mean a fault in the diffs, the transfer case or the tranny or theATTESSA?

I know by the "seat of the pants" something was off with the drive line. But which bit?

[STAGE1]

Hugh

I had a problum with a coupel of lights coming on and what i did to fixed it was to disconect the batery for about 30 seckonds. This only means you have to reset clock & radio ect.

[CruiseLiner]

get the attessa ecu out from behind the pasenger side rear fender panel area (note, its a pain in the arse to remove ) and check the attessa diagnostic code as one of the sensors may be stuffed.

my 4wd light is on constant because i dont have the 2 wires from the ecu connected to tell the attessa ecu the rpm signal and tps signal.

[66yostagea]

OK. There are lots of suggestions on how to stop the 4WD from showing.

Does anyone know why it comes on?

Is there one cause or many?

[beastien]

I know of two. From my testing experiences recently, having the TPS unplugged brings it on, and also pulling out the 4WD relay under bonnet brings it on.

[66yostagea]

I know of two. From my testing experiences recently, having the TPS unplugged brings it on, and also pulling out the 4WD relay under bonnet brings it on.

Mine just cameon while driving. I had been using the O/D button to get a bit extra engine braking, about

half a dozen itmes only.