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Discussion Starter #1
I just bought this car last week... it was cheap and I WAS (am) relatively sure this is an electrical/solenoid or tcm issue.
I changed the trans fluid/filter, which cured the slipping in 1st gear. I still have to manually shift it (have 1st 2nd and 3rd - and R). What puzzles me, is the gear indicator on the dash will light up sometimes, sometimes not. I've noticed it on restarting the car, and driving down the road both. Also, the cruise does not work (i keep trying, but no). I realize the obd code p1778 points to EV7 Solenoid -would a stuck check ball in the solenoid cause this? (maybe tcm or wiring - so I want to check the ohms /voltage on the TCM pinouts)... Can anyone point me to i diagram of the pinouts? Solenoid 7 is suppose to be 55-65 ohms between pins 10 n 67 with ignition off. and open circuit between pins 10 and 1 with TCM disconnected . The on/off in dash gear indicator really throws me!
I've also got the following OBD codes:
p1582
p1613
p0116
p0411
p0510
p0442
p0300
I'd appreciate Any insight... I'm really not familiar with these cars.
 

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Discussion Starter #2 (Edited)
HA no one seems to know S**t about these trannys - or they're keeping it to themselves! I put 13,000 miles on it manually shifting 3 forward gears. I changed the fluid and EV7 Solenoid. Then I ohm tested the pin outs at the tcm - which indicated bad g38 AND g68 speed sensors. my old pc died so i have no access to the pdf VW manual i used, and i don't remember the specs - but the ohm readings were WAY off. SO I finally just changed the g38 and cleared the codes with a generic obd2 scanner. it acted strange at first, still shifting manually. The next day i drove it I lost 2nd gear - it went into limp mode (1st & 3rd). I went 30 miles. when i started it to go back home (it was dead cold), i had 2nd back, and i could shift from 1st to 3 or D, and it would shift properly - running 1st n 2nd out to what i'm guessing are the proper shift points (which it never did before) - still no 4th (D). I hate guessing and making assumptions, but apparently the computer is re-learning something is fixed! germanautoparts.com listed the sensor i replaced as g38/g68 and don't list a g68 for a mkIII 01m. I've also heard there were 3 different g68's used on o1m's. SOO another few days of driving and i'll take the batt box n trans mount off to get the part no. off the g68 (idk why German a/p doesn't list a separate g68 for this car). I'll also re-scan for codes and post it when i'm done.... it should be helpful to someone!
 

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Your first mistake is wasting your time with a 01M trans. No matter what you do the trans will fail eventually. These transmissions are even worse than the 096. If you are looking to keep the car I would eliminate all your current and future problems with the 01M and install a 020 for ease of maintenance and reliability. They can be had for very cheap just about anywhere in the US...as can the rest of the required parts...pedal cluster, TCM, manual adjust clutch cable, shifter/linkage...etc. The 01M is simply not worth the effort. Your other option would be to install a 096 trans/TCM that is known to be problem free.
 
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