02 A4 Quattro AWD Tiptronic Transmission? Gremlins
#1
10-11-2010, 01:45 PM
02 A4 Quattro AWD Tiptronic Transmission? Gremlins
Lately I've been experiencing certain "slippage" and/or slight clank/jerk in certain points of motion when accelerating or decelerating (mostly when decelerating from "1st to stop" or "0 to 1st". I searched for days on this and other forums for answers and found one post from two years ago about a B5 that seems to best describe these "gremlins".
The post states:
Currently I'm having a 3rd mechanic look at it to give me his opinion but would appreciate any feedback or any referrals to good Audi mechanics in the New York Metro area.
Of course you might be asking why not take it to Audi. Well its simple. Over the last 8 years I have taken it to almost every Audi Service dept./dealer in the New York City area for various non-related to the topic issues or just regular servicing and.........they are f#%@% idiots and fugazi- ALL OF THEM!!!
Personally I'm leaning towards a bad torque converter but we shall see.
Any feedback would be appreciated.
EDIT: I just realized I posted this in the wrong model type thread. i will repost in the Audi A4 B6 thread. Mods please delete this
The post states:
Hi all, I am new to the forum.
I've had my '01 A4 2.8 Quattro Automatic/Tiptronic since May 2005. After about one year, I started noticing a slight popping/thumping sound when going from coasting to acceleration, mostly at low speeds. Doesn't have to be hard acceleration, but just going from coasting (where the wheels are pulling the engine) to acceleration (where the engine is pulling the wheels), creates the thump. In addition to hearing it, I can also ā€œfeelā€ that something goes "thump" somewhere, but can't really say where it comes from. Also hear/feel the same thump when coming to a stop (while the car is downshifting from 2nd to 1st , I think). I can avoid this particular symptom by coming to a stop very fast (braking hard) or veeeery slowly. Worst case in manuevering around parking lots at very low speeds, 1st and 2nd gear, and ther problem is gone at hogh speeds, 3, 4, 5th gears.
About 1.5 years ago, the Audi dealership mechanic claimed he did not reproduce the "thump" during a test-drive, which first really annoyed me, however after picking the car up I noticed that the phenomenon doesn't really show up until after the car has been running for a little while (5-10 mins). It's like there is a slack somewhere in the drive train that only shows up after the car is warm. Iā€™ve been living with this condition now for about 1.5 years, but it annoys me a lot, and Iā€™m wondering if itā€™s hurting the transmission, as it seems to get a little worse over time. Itā€™s got 75k mi on it now, and is otherwise in great condition.
Recent work: Just changed the ATF, no change in symptom. Just reset the ECU/TCU (off battery overnight) no change in symptom (except now I need my friggin' radio code again, which I don't have).
Other possible leads: bad torque converter.. not spinning up properly at low speeds maybe... at high speeds there are no problems... so it seems when certain parts of the drive trains are turning fast, the required slosh effect is still there to provide smooth transition from coasting to acceleration.Sticky solenoid inside transmission... causing pressure buildups to slow, causing the transmission to "grab" hard and with a slight delay... creating the thump? Dirty intake sensors... confusing the TCU with bad/incorrect readings, causing the delay + thump?
Any tips?
I've had my '01 A4 2.8 Quattro Automatic/Tiptronic since May 2005. After about one year, I started noticing a slight popping/thumping sound when going from coasting to acceleration, mostly at low speeds. Doesn't have to be hard acceleration, but just going from coasting (where the wheels are pulling the engine) to acceleration (where the engine is pulling the wheels), creates the thump. In addition to hearing it, I can also ā€œfeelā€ that something goes "thump" somewhere, but can't really say where it comes from. Also hear/feel the same thump when coming to a stop (while the car is downshifting from 2nd to 1st , I think). I can avoid this particular symptom by coming to a stop very fast (braking hard) or veeeery slowly. Worst case in manuevering around parking lots at very low speeds, 1st and 2nd gear, and ther problem is gone at hogh speeds, 3, 4, 5th gears.
About 1.5 years ago, the Audi dealership mechanic claimed he did not reproduce the "thump" during a test-drive, which first really annoyed me, however after picking the car up I noticed that the phenomenon doesn't really show up until after the car has been running for a little while (5-10 mins). It's like there is a slack somewhere in the drive train that only shows up after the car is warm. Iā€™ve been living with this condition now for about 1.5 years, but it annoys me a lot, and Iā€™m wondering if itā€™s hurting the transmission, as it seems to get a little worse over time. Itā€™s got 75k mi on it now, and is otherwise in great condition.
Recent work: Just changed the ATF, no change in symptom. Just reset the ECU/TCU (off battery overnight) no change in symptom (except now I need my friggin' radio code again, which I don't have).
Other possible leads: bad torque converter.. not spinning up properly at low speeds maybe... at high speeds there are no problems... so it seems when certain parts of the drive trains are turning fast, the required slosh effect is still there to provide smooth transition from coasting to acceleration.Sticky solenoid inside transmission... causing pressure buildups to slow, causing the transmission to "grab" hard and with a slight delay... creating the thump? Dirty intake sensors... confusing the TCU with bad/incorrect readings, causing the delay + thump?
Any tips?
Currently I'm having a 3rd mechanic look at it to give me his opinion but would appreciate any feedback or any referrals to good Audi mechanics in the New York Metro area.
Of course you might be asking why not take it to Audi. Well its simple. Over the last 8 years I have taken it to almost every Audi Service dept./dealer in the New York City area for various non-related to the topic issues or just regular servicing and.........they are f#%@% idiots and fugazi- ALL OF THEM!!!
Personally I'm leaning towards a bad torque converter but we shall see.
Any feedback would be appreciated.
EDIT: I just realized I posted this in the wrong model type thread. i will repost in the Audi A4 B6 thread. Mods please delete this
Last edited by Fuhgeddaboudit; 10-11-2010 at 01:49 PM.
#2
10-14-2010, 10:25 PM
I hear it in mine once in a while not all the time. Forget Audi they are not transmission mechanics they will never find a problem in a transmission that their bosses deam unserviceable. It could be several things though. I had an issue with shifting in A8 and it turned out to be the throttle position sensor on the throttle body. It wasn't making a solid connection after I cleaned it the problem went away. If the throttle position sensor can not be read by the TCM some TCM's command the transmission into full boost as if you were climbing a hill with all your buddies in the back seat.
Every time I have an issue with a trany I'm told these guys are the best and that's by people who know their way around. Try giving them a call.
A & A Transmission Inc- more info »
953 Broadway, Thornwood, NY (914) 769-3440
Every time I have an issue with a trany I'm told these guys are the best and that's by people who know their way around. Try giving them a call.
A & A Transmission Inc- more info »
953 Broadway, Thornwood, NY (914) 769-3440
#3
11-28-2010, 08:21 PM
Torque converter
unfortunately I had the same thing happen on my 03 A4 3.0Q. turned out to be torque converter. Not cheap and not easy to fix. this alone has almost totally moved me away from 1) Audi's - just the way they handled it 2) auto trans. You don't have to worry about this because you just change clutch/flywheel. granted it can be just as expensive to do this but at least you know for sure what the issue is. i chased this "slipping" problem for months and many thousands of $$. f'ing pos torque converter!!! car only had 106k and was a cream puff that owned since day one.
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