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Search: Posts Made By: ttuling
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Forum: A8 / S8 (D2 Platform) Discussion
09-08-2008, 06:55 AM
Replies: 39
Views: 5,196
Posted By ttuling

They also replaced the VB, with results, didn't they? TC + VB should be enough.

What the article added to our knowledge was some European shops' experiences & confirmation of which parts wear.

It was also pleasing to see the shop get right down to measuring whether the...
Forum: A8 / S8 (D2 Platform) Discussion
07-11-2008, 06:47 AM
Replies: 10
Views: 1,010
Posted By ttuling

Thanks for saying "module" again. I think they replaced the lamp control module...

There is no "brake control module" on the current path to the brake lights. There is a "lamp control module" which detects burned out bulbs. From there the wiring goes separately to the left, center,...
Forum: A8 / S8 (D2 Platform) Discussion
07-10-2008, 08:11 PM
Replies: 10
Views: 1,010
Posted By ttuling

Paul, look at the wiring diagram. I did and reached the same conclusion as the dealer

Not to say it couldn't be a ground but even when I stretch I can't understand how. When the highbeams are off, only the foglight module and instrument cluster are connected to the + side of them, or...
Forum: A8 / S8 (D2 Platform) Discussion
07-06-2008, 09:29 AM
Replies: 3
Views: 661
Posted By ttuling

Sorry, nothing obvious jumps out

It looks (on the 2001 US model S8 wiring diagram anyway) that the wire from the light switch goes to the left & right high beam fuses, the foglight module (to turn off the fog lights), and the...
Forum: A8 / S8 (D2 Platform) Discussion
07-04-2008, 09:26 AM
Replies: 10
Views: 1,010
Posted By ttuling

Expect real sluggishness if the ECM thinks the brakes are on

So yes, the brake light problem and sluggishness can go together. (Some cars get confused if all the brake lights are burned out because the burned out bulbs no longer pull the signal at the ECM...
Forum: A8 / S8 (D2 Platform) Discussion
05-15-2008, 06:31 AM
Replies: 7
Views: 496
Posted By ttuling

Though the Toyota electric CVT is pretty clever, and seems to hold up

Yes, there's something simple and honest about traditional manual gearboxes, but you also like clever engineering, so check this out if you haven't.

The core of the transmission is an open...
Forum: A8 / S8 (D2 Platform) Discussion
05-02-2008, 05:09 AM
Replies: 9
Views: 869
Posted By ttuling

Part of the crankcase ventilation system

At least one forum member has had the valve itself crack.

Tom
Forum: A8 / S8 (D2 Platform) Discussion
02-18-2008, 06:03 AM
Replies: 14
Views: 666
Posted By ttuling

Yes the sensor could still be bad. If its wiring looks good, consider changing it

They don't go bad too often, but on another car model where they did, they'd be temperature sensitive and work well except for the times when the car didn't run.

Tom
Forum: A8 / S8 (D2 Platform) Discussion
11-29-2007, 08:58 AM
Replies: 10
Views: 677
Posted By ttuling

Yes, on contacts during reassembly. But bad...

Yes, on contacts during reassembly. But bad soldering from the supplier was the problem.
Forum: A8 / S8 (D2 Platform) Discussion
11-29-2007, 07:12 AM
Replies: 10
Views: 677
Posted By ttuling

On mine it was bad soldering in both lights

<ul><li><a href="https://forums.audiworld.com/a8/msgs/132749.phtml">https://forums.audiworld.com/a8/msgs/132749.phtml</a</li></ul>
Forum: A8 / S8 (D2 Platform) Discussion
11-24-2007, 03:31 PM
Replies: 10
Views: 791
Posted By ttuling

There's more to it than that on a 5V. The internal oil and coolant seals should also be replaced

... lest it start letting oil into the coolant. BrianC72gt and I have both written here about that job.

Tom
Forum: A8 / S8 (D2 Platform) Discussion
11-05-2007, 09:17 AM
Replies: 5
Views: 3,693
Posted By ttuling

You have a different gearbox and slightly different symptoms than most here who have lost reverse.

The 4.2 uses the 5HP24A, but smaller engines do not as far as I know. And the 5HP24A does not go into limp-home mode with all the gear positions lit at once when its clutch F seal fails. Most or all...
Forum: A8 / S8 (D2 Platform) Discussion
10-23-2007, 08:30 AM
Replies: 3
Views: 396
Posted By ttuling

"Fix" beats "clear & recheck" for faults which disable the car if they worsen (e.g. rpm sensor)

I think your suggestion was too general. Sometimes clearing &amp; rechecking is fine, for example to see how quickly a code comes back so you can decide how urgently to replace an old oxygen sensor....
Forum: A8 / S8 (D2 Platform) Discussion
10-15-2007, 07:48 PM
Replies: 6
Views: 379
Posted By ttuling

The hydrogen explosions in the trunk are...

The hydrogen explosions in the trunk are propulsive though unpredictable
Forum: A8 / S8 (D2 Platform) Discussion
10-15-2007, 02:21 PM
Replies: 38
Views: 24,833
Posted By ttuling

Excellent. That's with '01 ECM and instruments, right? Steering wheel shifting in D/S?

And a couple things you might try for determining if there really are dual-use A8/S8 TCMs: see if yours accepts A8 coding, and if it does, see if it upshifts at A8 redline.

Tom
Forum: A8 / S8 (D2 Platform) Discussion
10-07-2007, 08:45 PM
Replies: 7
Views: 2,053
Posted By ttuling

Does reseating the plugs really do anything, or is it just disconnecting the power?

I wonder if those plugs are really subject to corrosion, or if it's just that the instrument cluster needs to be reset sometimes.

On my car, the instrument cluster refused to light up once, a few...
Forum: A8 / S8 (D2 Platform) Discussion
10-05-2007, 07:40 AM
Replies: 12
Views: 1,465
Posted By ttuling

Thanks

Thanks
Forum: A8 / S8 (D2 Platform) Discussion
10-04-2007, 08:03 PM
Replies: 12
Views: 1,465
Posted By ttuling

They must have updated the Bentley manual; mine showed no A8/S8 coding difference

Hopefully that's all it is. It could also be that there is a different TCM part number needed to accept the S8 coding. If it's the same part, then a miscoded TCM could overrev an A8 during manual...
Forum: A8 / S8 (D2 Platform) Discussion
10-04-2007, 03:02 PM
Replies: 12
Views: 1,465
Posted By ttuling

S8s have higher redline and looser torque converters than A8s, right?

If so, your car should really have an S8 TCM. But you might temporarily try an A8 TCM just to see if it talks with everything else.

Tom
Forum: A8 / S8 (D2 Platform) Discussion
10-02-2007, 07:16 PM
Replies: 18
Views: 1,456
Posted By ttuling

Not anymore, if ever they did. See the...

Not anymore, if ever they did. See the immobilizer question at www.ross-tech.com's FAQ
Forum: A8 / S8 (D2 Platform) Discussion
10-01-2007, 08:59 PM
Replies: 18
Views: 1,456
Posted By ttuling

The code you'd have used when setting up new keys...

The code you'd have used when setting up new keys to work with the immobilizer
Forum: A8 / S8 (D2 Platform) Discussion
10-01-2007, 12:25 PM
Replies: 18
Views: 1,456
Posted By ttuling

If the gauges are not lighting up, hope that disconnecting the battery resets it

and if the gauges are lighting up and the immobilizer light eventually flashes, you might try removing and reinserting the key between each attempt to have the key recognized. You needn't crank the...
Forum: A8 / S8 (D2 Platform) Discussion
09-28-2007, 07:48 AM
Replies: 6
Views: 310
Posted By ttuling

... or any other cause of low refrigerant. A classic A8 symptom well described in the forum.

It would be interesting to hear if the problem turns out not to be low low refrigerant.

Tom
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