2001 TDI 01m auto transmission issues after fluid change - SOLVED
First, thanks to everyone who makes the forum such a great resource!
To summarize:
The car is my daughters 2001 TDI Automatic with 217,000 miles.
It ran just fine until I decided to change the transmission fluid (properly, level, correct temp, car running etc.) and now it slips, doesn't engage decisively between gears and doesn't down-shift at speeds over 20mph.
It does run fine when I shift it manually.
I have since read that I should have just left it alone...
After many hours searching, reading and trying various things and is still not performing correctly and I am hoping someone can help.
I do have the ross tech VCDS tool. I have a repair manual but there is not much in it on auto transmissions.
The issues:
1 - Code 01192 Torque Converter Lock-Up Clutch
Sub code -04-10 Mechanical malfunction - Intermittent
2- The transmission does not down-shift when the gas pedal is pressed aggressively, as in going up a hill or accelerating at any speed over 20mph and it slips pretty badly (rpms go way up without any change in speed).
At very slow speeds (under 10 mph) it will down-shift.
3- There is a big slip between 2nd and 3rd before it engages.
I let off on the gas pedal and it seems to help it engage.
The things I'v tried:
*Completely took apart, cleaned and modified the valve body with a Transgo kit. It improved 1st and 2nd gear performance.
*Put a new electrical harness on the valve body
*Checked all the solenoids for proper resistance
*Adjusted the Booster Regulator valve to increase pressure. (it helped 1st and 2nd)
*Added Lucas slip stop
*Changed the coding VCDS to DSP mode on and off and trie factory, econo and sport settings.
*After each tweak or change I reset the trans "Relearn Procedure" to reset the TCM, although there are so many different versions out there and without any confirmation from car or software, I have never been sure about the success.
The Questions:
-Seeing as it engages and has nice torque when I select the gears manually, is it a computer issue?
-Should I try a remanufactured valve body?
-What is the definitive relearn procedure?
-After doing the relearn procedure, how long does it take for the car to improve?
-Should the car behave differently after a relearn procedure?
-If the friction plates were toast, wouldn't it also slip when the gears are engaged manually?
Thanks for any help!
First, thanks to everyone who makes the forum such a great resource!
To summarize:
The car is my daughters 2001 TDI Automatic with 217,000 miles.
It ran just fine until I decided to change the transmission fluid (properly, level, correct temp, car running etc.) and now it slips, doesn't engage decisively between gears and doesn't down-shift at speeds over 20mph.
It does run fine when I shift it manually.
I have since read that I should have just left it alone...
After many hours searching, reading and trying various things and is still not performing correctly and I am hoping someone can help.
I do have the ross tech VCDS tool. I have a repair manual but there is not much in it on auto transmissions.
The issues:
1 - Code 01192 Torque Converter Lock-Up Clutch
Sub code -04-10 Mechanical malfunction - Intermittent
2- The transmission does not down-shift when the gas pedal is pressed aggressively, as in going up a hill or accelerating at any speed over 20mph and it slips pretty badly (rpms go way up without any change in speed).
At very slow speeds (under 10 mph) it will down-shift.
3- There is a big slip between 2nd and 3rd before it engages.
I let off on the gas pedal and it seems to help it engage.
The things I'v tried:
*Completely took apart, cleaned and modified the valve body with a Transgo kit. It improved 1st and 2nd gear performance.
*Put a new electrical harness on the valve body
*Checked all the solenoids for proper resistance
*Adjusted the Booster Regulator valve to increase pressure. (it helped 1st and 2nd)
*Added Lucas slip stop
*Changed the coding VCDS to DSP mode on and off and trie factory, econo and sport settings.
*After each tweak or change I reset the trans "Relearn Procedure" to reset the TCM, although there are so many different versions out there and without any confirmation from car or software, I have never been sure about the success.
The Questions:
-Seeing as it engages and has nice torque when I select the gears manually, is it a computer issue?
-Should I try a remanufactured valve body?
-What is the definitive relearn procedure?
-After doing the relearn procedure, how long does it take for the car to improve?
-Should the car behave differently after a relearn procedure?
-If the friction plates were toast, wouldn't it also slip when the gears are engaged manually?
Thanks for any help!
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