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Transmission Issues

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Old 03-29-2014, 02:41 AM   #1
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Default Transmission Issues

I couldn't sleep....was thinking about having to fork out cash for a new car. I've been searching the forum, but can't find my specific issue. Here's the situation:

a6 s-line 2.7T
2004
83K

Outside temp - 80 or higher (Texas summers)
Engine temp - warm (driving for at least an hour)
Sitting at a stop light, with traffic around
Upon accelerating, it shifts VERY hard from 2nd to 3rd gear. It feels like it like it slips, then it clunks into 3rd very hard. It's not a good feeling.

I've spent 4k on my car in the last 12 months, and I'm close to running out of patience.

Based on the forum, changing the trans fluid looks like the first step. What's the likelihood this will address the issue?

Also, if this doesn't address the issue, what's next?
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Old 03-29-2014, 05:44 AM   #2
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Plug codes from engine and trans, post codes. Check fluid level.
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Old 03-29-2014, 05:59 AM   #3
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No codes! I haven't checked trans fluid yet.

I found this link this morning. Sounds similar:
http://www.audiforums.com/forum/b6-m...an-you-186610/
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Old 03-29-2014, 06:47 AM   #4
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That link is for a CVT transmission. I doubt that you have a CVT.
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Old 03-29-2014, 02:36 PM   #5
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you're right...me don't.
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Old 03-29-2014, 03:30 PM   #6
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Quote:
Originally Posted by Chief#16 View Post
you're right...me don't.
And you should be very very thankful you don't, not one of Audi's finest ideas.
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Old 03-30-2014, 03:51 AM   #7
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What are you using to pull codes?
Are you checking the trans or just the engine.

No codes is hard to believe.
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2003 GMC Yukon Denali XL (the anti-earth)
2004 Dodge Dakota (hey, at least it's stick and 4x4)
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Old 04-03-2014, 03:27 AM   #8
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I'll have them re-pull the codes at the shop and circle back. Thanks!
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Old 04-09-2014, 06:29 PM   #9
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I had my guy pull the codes. He found NO transmission issues at all. He recommended a transmission fluid/filter change. Quoted $400. Does that seem reasonable?

He also sold me hard on keeping my car. He said all the expensive work is done (like the timing belt).
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Old 04-09-2014, 06:52 PM   #10
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Quote:
Originally Posted by Chief#16 View Post
I had my guy pull the codes. He found NO transmission issues at all. He recommended a transmission fluid/filter change. Quoted $400. Does that seem reasonable?

He also sold me hard on keeping my car. He said all the expensive work is done (like the timing belt).
That's not bad on this service if he is using the right parts and fluid, the cost of "right" material is in the 300 range.
Then there is the question of the service being done right with out the very disastrous flush procedure, please make sure that is not being done.
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Old 04-09-2014, 07:21 PM   #11
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The estimate says:

Perform transmission service including filter kit and gasket and then flushing the fluid.
SYN TRAN FLUID $122
ATF FILTER KIT $53
TRANS CONDITION KIT $32

Labor - $188

Good? No good? I'm clueless...
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Old 04-09-2014, 07:32 PM   #12
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Quote:
Originally Posted by Chief#16 View Post
The estimate says:

Perform transmission service including filter kit and gasket and then flushing the fluid.
SYN TRAN FLUID $122
ATF FILTER KIT $53
TRANS CONDITION KIT $32

Labor - $188

Good? No good? I'm clueless...
WTF is a trans condition kit?
It's about a two hour job if the guy is any good at all, most of it is draining/dropping the pan and replacing the filter and pan.
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Old 04-10-2014, 03:26 AM   #13
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I'm not sure what that is.

It shows two hours of labor on the estimate.
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Old 04-10-2014, 05:56 PM   #14
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It happened three times again tonight.

Warm day, driving for more than an hour, sitting in traffic, then very hard shift from 3rd to 4th. It felt like the engine could have dropped onto the road.

No engine or transmission codes. I guess the only thing left is trying to change the transmission fluid/filter. My mechanic talked me off the ledge yesterday, but if this doesn't work, I'm saying good-bye.
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Old 04-10-2014, 07:16 PM   #15
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Oh I don't know. Replacing a transmission could/should give you a couple hundred thousand miles and some pleasure for 4-6 k $. The car loses tat or more on a trade in...very few people will buy a car knowing it needs a trans. I put a new trans in an 02 S6 at 100k...expensive but a better deal than a 50k new car.
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Old 04-11-2014, 02:58 AM   #16
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Quote:
Originally Posted by Chief#16 View Post
I had my guy pull the codes. He found NO transmission issues at all.
I'm having a hard time believing this. Did he scan the trans or just the engine? What tool was used?

I'd want a second opinion before I did anything.
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1980 VW Scirocco (mid-life crisis car)
1983 Mazda RX-7 (revolutionary sports car)
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Old 04-11-2014, 05:56 AM   #17
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I think the guy is pretty good. He found one code - and trans fluid was dark but not burnt. Found a P0117 fault on the temp sensor and recommended I replace it.

I looked back at an older estimate from the dealer. It says the "secondary radiator fan shorted and not working causing other fans to run excessively". Another dumb question, but would that cause the issue I'm experiencing (hard shifting only when the engine is warm, outside temp is warm, and accelerating after sitting at a traffic light).
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Old 04-11-2014, 06:20 AM   #18
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Quote:
Originally Posted by Chief#16 View Post
I think the guy is pretty good. He found one code - and trans fluid was dark but not burnt. Found a P0117 fault on the temp sensor and recommended I replace it.

I looked back at an older estimate from the dealer. It says the "secondary radiator fan shorted and not working causing other fans to run excessively". Another dumb question, but would that cause the issue I'm experiencing (hard shifting only when the engine is warm, outside temp is warm, and accelerating after sitting at a traffic light).
Fluid is always dark. I don't think that this problem is mechanical. It is possible that the TCU is losing power? Bad TCU? Wet? Any codes in ABS or other areas? When you restart the car, does the TCU reset?
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Growing old is mandatory; growing up is optional.

2005 A6 Sedan Q 3.2 (wife's whip)
2003 S8 (Q Ship)
2000 A4 Avant Q 2.8 (daily driver)
1999 BMW M Coupe (clownshoe)
1980 VW Scirocco (mid-life crisis car)
1983 Mazda RX-7 (revolutionary sports car)
1999 Mazda Miata SSB (track beotch, no plate)
2003 GMC Yukon Denali XL (the anti-earth)
2004 Dodge Dakota (hey, at least it's stick and 4x4)
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Old 04-11-2014, 06:27 AM   #19
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Sorry - what's TCU? I experience no other issues, really. Runs great, until it's hot....
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Old 04-11-2014, 06:34 AM   #20
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Transmission control unit. Whenever it goes into limp mode (which is an controller state, not a mechanical situation), it should store a code. The only reason I can think of why it would go into limp mode but not have code stored is if it is off. So if there really are no codes (which I am having a hard time believing, as I mentioned) the unit is powered off.

This aligns with a heat issue. Maybe there is a control relay or something that heats up and cuts out? But even if the "shuts off" theory is correct, there should be ramifications with other control units; they have to be looking around trying to figure out why the TCU shut down.

So basically, I'm concerned about your shop. I'd want a second look from someone else.
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Growing old is mandatory; growing up is optional.

2005 A6 Sedan Q 3.2 (wife's whip)
2003 S8 (Q Ship)
2000 A4 Avant Q 2.8 (daily driver)
1999 BMW M Coupe (clownshoe)
1980 VW Scirocco (mid-life crisis car)
1983 Mazda RX-7 (revolutionary sports car)
1999 Mazda Miata SSB (track beotch, no plate)
2003 GMC Yukon Denali XL (the anti-earth)
2004 Dodge Dakota (hey, at least it's stick and 4x4)
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Old 04-11-2014, 06:34 AM
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