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Transmission Problems Transmission in Limp Mode

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Old 06-14-2014, 09:39 AM   #1
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Default Transmission Problems Transmission in Limp Mode

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My Transmission would not shift into gear, time after time it went into Limp mode, What I found out was one thing I will never forget about a Audi Transmission. When they say you need to change your fluid at the recommended mileage do it not one mile over. I will show you pics of what my transmission looked like still driving in Limp mode. This will be one of 2 treads
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Old 06-14-2014, 10:01 AM   #2
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Default 5HP24A Audi Valve Body Insides

Here is my Audi A8 Valve body, the outside looked as if all I need was a filter change, but when I open up the valvebody, it was another world of problems, sometimes if you get a transmission solenoid code, that your solenoid is bad does not mean that your solenoid must be replaced. they are expense and we all want to know how they work, so I took mine apart and here is what I saw. First of all because the solenoid screen was clogged, it caused the valve body sensor/ controller to burnout, this does not always show up on your computer as a first look, you have to take the valve body out of the transmission and inspect it yourself. the code will always show the solenoid first. Secondly if the fluid is changes when it suppose to be , this problem may not occur. So before you buy a transmission like I did this is just another step you can take to finalize your decision on buying a new one I hope this helps everyone to take care of there Master piece
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Old 06-14-2014, 12:04 PM   #3
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So…did you just clean the valve body/screen and replace the controller/sensor or need a new transmission?
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Old 06-14-2014, 12:50 PM   #4
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Originally Posted by Audi1969 View Post
Here is my Audi A8 Valve body, the outside looked as if all I need was a filter change, but when I open up the valvebody, it was another world of problems, sometimes if you get a transmission solenoid code, that your solenoid is bad does not mean that your solenoid must be replaced. they are expense and we all want to know how they work, so I took mine apart and here is what I saw. First of all because the solenoid screen was clogged, it caused the valve body sensor/ controller to burnout, this does not always show up on your computer as a first look, you have to take the valve body out of the transmission and inspect it yourself. the code will always show the solenoid first. Secondly if the fluid is changes when it suppose to be , this problem may not occur. So before you buy a transmission like I did this is just another step you can take to finalize your decision on buying a new one I hope this helps everyone to take care of there Master piece
Wow…that big filter didn't do much good, did it? That stuff should not have got into the valve body…design flaw?
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Old 06-14-2014, 04:44 PM   #5
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The transmission worked fine and there was no need to rebuild
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Old 06-14-2014, 08:36 PM   #6
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Wow…that big filter didn't do much good, did it? That stuff should not have got into the valve body…design flaw?
Well, that's just what I wanted to see as I come out of a 2 month perfect streak. I am about to replace my transmission pan, and do the necessary filter/seals/service. Took a chunk of concrete in morning rush hour the other day with no choice but to try and straddle it, and WHAMMO! My heart breaks again after 2 months of absolute perfect performance out of dein Audi. Then read this and see what I am just praying no to see when i open her up. I picked a bad week to stop sniffing glue/drinking coffee/smoking cigarettes…………

Is there something odd with the design or mating surfaces of the filter that you know of sloop? Or am i better off selling this filter and shoving my dirty undies in there? Could really use a use for them anyways.
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Old 06-15-2014, 08:30 AM   #7
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The transmission worked fine and there was no need to rebuild
That is effing outstanding!!! I haven't popped a valve body since I put in a trans-go kit on my ex girlfriend's 74 Corvette. I hate those little ***** on GM valve bodies…you either have a picture of where they go or yøu hope to hell they stayed where they're supposed to when you drop the valve body on a turbo-hydramatic.

Are there little ***** to worry about on the ZF valve body? I'm thinking perhaps the transmission fluid and filter change evolution needs to include dropping the valve body and cleaning that little screen?

Did you have to replace the sensor too?
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Old 06-15-2014, 08:33 AM   #8
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Well, that's just what I wanted to see as I come out of a 2 month perfect streak. I am about to replace my transmission pan, and do the necessary filter/seals/service. Took a chunk of concrete in morning rush hour the other day with no choice but to try and straddle it, and WHAMMO! My heart breaks again after 2 months of absolute perfect performance out of dein Audi. Then read this and see what I am just praying no to see when i open her up. I picked a bad week to stop sniffing glue/drinking coffee/smoking cigarettes…………

Is there something odd with the design or mating surfaces of the filter that you know of sloop? Or am i better off selling this filter and shoving my dirty undies in there? Could really use a use for them anyways.
Dunno. But it sounds like a valve body removal and service is in order as well. I'm going to ask 4D4 what he thinks...
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Old 06-15-2014, 01:39 PM   #9
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well the thing about changing the filter, is that the valve body from the bottom always looks clean, if you look closely at my pictures, you will see that it is no way you should not want to clean out the valve body, and solenoid screens. It only takes another 2.5 hours which could save you a transmission, and you never know how or what is in the valvebody
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Old 06-16-2014, 05:02 AM   #10
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Default having tranny issues as we speak

did you show any codes? I had some prior issues with the tranny acting funny while stopped. then Sat night got in the car from dinner with the family started it up, and not touching a thing car clunked like it was grinding into gear. Drove home fine.
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Old 06-16-2014, 07:23 AM   #11
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you have to think that something else is wrong with that transmision with that kind of disintegration. Or the wrong fluid put in at som epoint ?
regardless , that is pretty damn amazing..

well i guess more shocking than amazing , shocked at the pics but amazed the car was still actually moving.
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Old 06-17-2014, 05:48 AM   #12
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Dunno. But it sounds like a valve body removal and service is in order as well. I'm going to ask 4D4 what he thinks...
I think you have to play it by ear. In most cases, you'll see some residual in the pan, which is normal. In that case, I wouldn't touch anything other than the filter. If the pan is full of crap, maybe you need to dig a little deeper.

Great pick to show the "Don't ever change your fluid or you will ruin your transmission" crowd.
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Old 07-01-2014, 11:50 PM   #13
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Default Limp MOde FIX

Ok so my 2004 Audi A4 went into limp mode.
1What DO I do scant for truble codes.
2.Find out its selanoid 3 code. SImple right ....NoT I dont replace a selanoid because it is a rooky move and I am no rooky mechanic.
3. I drop the pan change the fluid filter clean connections. No Respnse Still limp mode
4. Replace my TCU (with exact same number otherwise youd have to program it) and what you know problem fixed.
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Old 07-02-2014, 01:46 PM   #14
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Ok so my 2004 Audi A4 went into limp mode.
1What DO I do scant for truble codes.
2.Find out its selanoid 3 code. SImple right ....NoT I dont replace a selanoid because it is a rooky move and I am no rooky mechanic.
3. I drop the pan change the fluid filter clean connections. No Respnse Still limp mode
4. Replace my TCU (with exact same number otherwise youd have to program it) and what you know problem fixed.
Rookie move is to NOT pull the valve body and disassemble and clean it…especially if the pan was filthy inside….
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Old 07-02-2014, 01:50 PM   #15
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I think you have to play it by ear. In most cases, you'll see some residual in the pan, which is normal. In that case, I wouldn't touch anything other than the filter. If the pan is full of crap, maybe you need to dig a little deeper.

Great pick to show the "Don't ever change your fluid or you will ruin your transmission" crowd.
I agree..play it by ear. But it's nice to hear the valve body pull isn't that tough….I've pulled a dozen GM valve bodies and put in kits on everything from a 454 Caprice with a 454/390hp hydraulic (GM) cam in front of a turbohydramatic to 350 engines with turbohydramatics….as long as you either remember where the ***** are or have a diagram, piece of cake! And the results are well worth it, whether you go for a full manual valve body reprogram or just shift kit.
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Old 07-17-2014, 09:07 AM   #16
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I think you have to play it by ear. In most cases, you'll see some residual in the pan, which is normal. In that case, I wouldn't touch anything other than the filter. If the pan is full of crap, maybe you need to dig a little deeper.

Great pick to show the "Don't ever change your fluid or you will ruin your transmission" crowd.
I was part of that crowd dammit

I have 400,00 on original fluid .. i think before i get this baby towed to the heap im gonna have a peak just for you guys
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Old 07-20-2014, 12:28 PM   #17
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The sensor was burned out as shown in picture, it needed to be replaced as well
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Old 07-30-2014, 01:38 PM   #18
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Hi Guys,

From the pictures, which component is the sensor? Is this sensor in the valve body? If so, what does it look like?

Sorry, to jump in like this, but I'm having the same issue as yours in my 02' A6 4.2L I can start up the car and drive it around, but it will goes into limp mode within 20 or so minutes.

Thanks for any feedback.

Jay
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Old 08-02-2014, 01:02 PM   #19
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Originally Posted by Jat007 View Post
Hi Guys,

From the pictures, which component is the sensor? Is this sensor in the valve body? If so, what does it look like?

Sorry, to jump in like this, but I'm having the same issue as yours in my 02' A6 4.2L I can start up the car and drive it around, but it will goes into limp mode within 20 or so minutes.

Thanks for any feedback.

Jay
Here ya go:
http://forums.audiworld.com/a8-s8-d2...ensor-1751220/
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Old 08-05-2014, 03:15 AM   #20
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Originally Posted by Erofreak View Post
Ok so my 2004 Audi A4 went into limp mode.
1What DO I do scant for truble codes.
2.Find out its selanoid 3 code. SImple right ....NoT I dont replace a selanoid because it is a rooky move and I am no rooky mechanic.
3. I drop the pan change the fluid filter clean connections. No Respnse Still limp mode
4. Replace my TCU (with exact same number otherwise youd have to program it) and what you know problem fixed.
Good for you…but an experienced mechanic might have removed solenoid 3 while the pan and filter was out to check the solenoid screen and/or test the solenoid. At that point he would know the solenoid wasn't plugged, the solenoid worked, and the problem was most likely in the TCU.
My dad used to say it's better to be lucky than good, but I prefer to say the harder (or smarter with today's computer stuff) I work the luckier I get….
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