adjust auto transmission line pressure

Occams_Razor

Veteran Member
Joined
Jun 27, 2003
Location
Dayton, Ohio
TDI
Jetta Wagon, 2003, Reflex Silver
[ QUOTE ]
the final drive fluid interchanges with the with the ATF, or do you drain it separately?

[/ QUOTE ]

Seperate.

[ QUOTE ]
What fluid did you all use OEM, redline, Amsoil or something else?

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I bought the kit from Harv which included 4 litres of OEM fluid.
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
Final drive is separate from the ATF.
 

Baltic

Member
Joined
Oct 6, 2003
Location
Finland
TDI
Transporter TDI (75kW, auto), 1999
Hey, Kerma and Eric G. !!!

I´m going to try this mod. (if the tranny is same, like Passats)
Background info:
Car: Vw Transporter van, 1999, 5cyl TDI, 75kW
4 gear automatic (non tip-tronic)
odom. 150 000km (I have driven last 50000kms)

Question 1. How many "clicks" do I turn the screw IN direction (clockwise).
You said that 30 is max. Does the adjustment effect if I turn it only
10 clicks, for example...???? Is it better to turn it IN as much as possible?

Question 2. What is the "factory" setting for this screw. And why
there is possibility to adjust it? Obviously I could
turn it back, if the mod does`nt work fine?

Question 3. Is there ONLY one adjustment screw. In Kermas picture
there seems to be another "star shaped" hole. What´s that??
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
[ QUOTE ]
Hey, Kerma and Eric G. !!!

I´m going to try this mod. (if the tranny is same, like Passats)
Background info:
Car: Vw Transporter van, 1999, 5cyl TDI, 75kW
4 gear automatic (non tip-tronic)
odom. 150 000km (I have driven last 50000kms)

Question 1. How many "clicks" do I turn the screw IN direction (clockwise).
You said that 30 is max. Does the adjustment effect if I turn it only
10 clicks, for example...???? Is it better to turn it IN as much as possible?

Question 2. What is the "factory" setting for this screw. And why
there is possibility to adjust it? Obviously I could
turn it back, if the mod does`nt work fine?

Question 3. Is there ONLY one adjustment screw. In Kermas picture
there seems to be another "star shaped" hole. What´s that??

[/ QUOTE ]

First, make sure it is an 01M 4-speed.

1) Up to you. This is still experimental. You might break the plastic tabs if you try to turn it back and there is no replacement part.

2) maybe to compensate for wear, or provide a range of settings at the factory?

3) Those other thngs you see are known as "shift cups" and they hold the springs on place for the valves in the valve body. If you look on the othe side you will see the solenoids. One thing ou can do is make sure none of the shift cups has loosened up, like the one more towards the top of the pictures in the first post. (it had to be screwed in a bit) But be careful, some of those plastic caps (grey color I think) will come out with a 90 degree turn and are not threaded.
 

bigbear

New member
Joined
Feb 16, 2004
Hi!

I have Passat 3B (europe model 1999 110hp) It have 4 gear automatic but how I know if it is 01M model?
 

joshmckin

Veteran Member
Joined
Jan 31, 2003
Location
Las Vegas
TDI
Jetta, 02, dark blue
Finished the mod a few hours ago and just got back from a test. Shifting feels great, nice and firm. Thanks for supplying the info necessary to do this mod.
 

GoFaster

Moderator at Large
Joined
Jun 16, 1999
Location
Brampton, Ontario, Canada
TDI
2006 Jetta TDI
A 1999 Passat for Europe is the B5 model - longitudinal engine. This means it is not the O1M transmission - that one is transversely mounted for the Golf-based vehicles.
 

joshmckin

Veteran Member
Joined
Jan 31, 2003
Location
Las Vegas
TDI
Jetta, 02, dark blue
Well it's offical. Since changing my atf and doing this mod I am now getting 2 more miles per gallon (average of 4 tanks). Bringing me to around 42 mpg, my best ever. Mostly high driving around 85 mph between San Antonio and San Marcos.
For those of yall planning on doing this mod i went ahead and posted a pic of what the tool from Autozone looks like, with quarters for a scale refence, used all my hundereds lighting the barbeque /images/graemlins/smirk.gif
It fitts pretty tight and was a little hard to get out of the hole at first, I would recommend short turns, maybe 2 clicks at first just to keep it easy.
 

zanzabar

Vendor
Joined
Oct 18, 2002
Location
Petaluma, CA
TDI
2004 Jetta BEW 5spd (dual duty track car and daily driver beater)
Josh, how many clicks did you turn? Is everyone pretty much going to the max, or halfway, or what?
 

joshmckin

Veteran Member
Joined
Jan 31, 2003
Location
Las Vegas
TDI
Jetta, 02, dark blue
I'm not sure the exact number (30-40). I just continued to advance the little nob until it felt like it was tight. I may have been able to get a few more clicks out of it, but didn't want to risk breaking something. The tool is so small it would be pretty hard to over torque.
 

Dzl8R

Veteran Member
Joined
Mar 2, 2004
Location
San Antonio TX
TDI
Jetta GLS, 05, Spice Red
All, My new to me 2001 Jetta with the 4 speed auto has been a bit weird lately. /images/graemlins/frown.gif It's over reving at higher speeds. I will be going 80 mph and hit the pedal my tach will quickly climb to 4000 and no increase in speed!!! It seems just like a bad clutch on a manual. At lower speeds it seems to be ok or if I'm real gentle with the pedal it might shift like its supposed to.

Any ideas ... 68500 miles on this thing. I'm planning on changing the filter and fluid but this adjustment of the line pressure...is this what is needed too? Are there other tranny adjustments that I can do? HELP!

Frustrated and slipping in San Antonio

/images/graemlins/confused.gif
 

silentbob

Veteran Member
Joined
Aug 27, 2003
Location
new hampshire usa
TDI
02 golf
you have torque converter lockup problems. reset the ecu and keep careful track of it. not too good to drive it without lockup. ive had this problem almost daily for months. if anyone has an ideas id be open to opinions.
 

silentbob

Veteran Member
Joined
Aug 27, 2003
Location
new hampshire usa
TDI
02 golf
NAW...key in on position, hold throttle pedal to floor for about 10 seconds, let off pedal and restart with foot OFF pedal. should get you back to square one. for how long, i cant say. its about 1-2 days for me tops. then the torque converter stops locking up.
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
[ QUOTE ]
All, My new to me 2001 Jetta with the 4 speed auto has been a bit weird lately. /images/graemlins/frown.gif It's over reving at higher speeds. I will be going 80 mph and hit the pedal my tach will quickly climb to 4000 and no increase in speed!!! It seems just like a bad clutch on a manual. At lower speeds it seems to be ok or if I'm real gentle with the pedal it might shift like its supposed to.

Any ideas ... 68500 miles on this thing. I'm planning on changing the filter and fluid but this adjustment of the line pressure...is this what is needed too? Are there other tranny adjustments that I can do? HELP!

Frustrated and slipping in San Antonio

/images/graemlins/confused.gif

[/ QUOTE ]

When you're under the car with the transmission oil pan off, be sure to check the tightness on the other shift cups along with the "line pressure mod". Some turn 90 degrees to remove, those are not the concern. You want to especially check the stainless steel one with the hex head- this is the one that regulates the lockup clutch, if memory serves. IF there is leakage past the shuttle valve, it will cause the symptoms you mention.
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
For an example of a loose shift cup "cap", look at the second and third pictures in the first post of this thread. The leftmost "cap" is unscrewed a bit- this was the way I found it. Tighten all of these that you find- the only one that should be "adjustable" is the star-shaped one, the rest should be nice and snug. Fluid actually flows out of these caps, so it's not a sealing issue, but the spring tension on the shuttle valves will be looser than they should be - not good.

The exception is the stainless steel one- it is "around the corner" - It should be nice and tight or it will leak and cause the lockup clutch to slip.
 

Dzl8R

Veteran Member
Joined
Mar 2, 2004
Location
San Antonio TX
TDI
Jetta GLS, 05, Spice Red
Im going to order a filter kit and a couple of gallons of the Redline D4ATF. When I drop the pan I hope to find a loose cup! I drove it in third for a bit today and it was lower revs for mph. Keeping fingers adn toes crossed.

I will have to find a kind soul here in San Antonio with a Vag-Com and a computer once it arrives...Vag-Com hates Macintosh even emulating a PC and running windows XP Pro.

Thanks all and keep the suggestions comming

Preston

I miss my old type 1 diesel.....my kingdom for a clutch /images/graemlins/grin.gif
 

zanzabar

Vendor
Joined
Oct 18, 2002
Location
Petaluma, CA
TDI
2004 Jetta BEW 5spd (dual duty track car and daily driver beater)
Not sure if this Redline D4ATF is right for the VW A4s. As far as I know, the only acceptable ATF is the VW Pentosin made special for these cars.
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
[ QUOTE ]
Not sure if this Redline D4ATF is right for the VW A4s. As far as I know, the only acceptable ATF is the VW Pentosin made special for these cars.

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According to VW.

I am using Amsoil Universal ATF now in my ride, no problem at all for about 5k miles it's been in. It will take a few flushes and filter changes to get all the "gold" stuff out, but if it works, IMO it's worth it.
 

Dzl8R

Veteran Member
Joined
Mar 2, 2004
Location
San Antonio TX
TDI
Jetta GLS, 05, Spice Red
In another thread it's been discussed. It actually exceeds VW specs. Several folks out there have been using it with success.
I just ordered 3 gallons of the stuff so I will be able to flush it. ouch... It runs about 8 bucks a quart.

VW somewhere is recomending a fluid change at 60 k miles too. so much for lifetime...i guess it's life is over when it stops working/images/graemlins/smirk.gif.

Preston /images/graemlins/eek.gif
 

zanzabar

Vendor
Joined
Oct 18, 2002
Location
Petaluma, CA
TDI
2004 Jetta BEW 5spd (dual duty track car and daily driver beater)
Yup, just saw that other thread. My bad. That's good news that there are some choices available.
 

mgwerks

Veteran Member
Joined
Dec 10, 2003
Location
Texas Hill Country
TDI
black 1999 New Beetle
So, when are you gonna do all this? BTW, I met online another Beetle TDI owner - lives in Comfort, out my way! /images/graemlins/smile.gif
 

Dzl8R

Veteran Member
Joined
Mar 2, 2004
Location
San Antonio TX
TDI
Jetta GLS, 05, Spice Red
I have to wait for parts so it will be last weekend in March since the next is the kiddos b-day.

No ones bad. We have to make sure we don't do stupid stuff /images/graemlins/wink.gif

The car I have is out of MI and so am I (but "we" the car and i just met) I'm a world hopping USAF/GI.

Preston /images/graemlins/grin.gif
 

zanzabar

Vendor
Joined
Oct 18, 2002
Location
Petaluma, CA
TDI
2004 Jetta BEW 5spd (dual duty track car and daily driver beater)
Another happy high line-pressure transmission! My car has 134k miles and I performed the F&F service and line-pressure mod last weekend. The car is running great, shifting is indeed a bit crisper, and there is no hesitation when I back out of my driveway and shift into drive. At first the shifting was jolty (ie it would send your head backwards in the shift from 1-2 and 2-3) but it has since smoothed out.

On turning the 'screw', I turned it as far as it would go, which was only about 2 complete revolutions. Probably a total of 15-20 clicks.

On a side note about the fluid/filter replacement, my filter was sitting in the bottom of the fluid pan when I removed it.
/images/graemlins/confused.gif
I'm not sure if it fell off during the pan removal process, or if it was dislocated before that. /images/graemlins/crazy.gif I changed the tranny fluid for the first time last winter with about 110k miles on the car. There was a fair bit of metallic sludge at the bottom of the pan. Probably not good.

On another note /images/graemlins/rolleyes.gif, I stripped TWO of the bolts that hold the tranny fluid pan on. Be careful and look up the torque specs before reinstalling the pan! The torque required must be quite low because I didn't turn them that hard. Problem was remedied (??? I hope ???) by using longer bolts purchased from a hardware store.

I will continue to report the functioning of my high-mileage transmission with this mod. It would be nice to see a 2mpg increase in fuel economy! Not holding my breath though.
 

ulinux

Active member
Joined
Jan 16, 2001
TDI
2,5l A6 V6 TDI TURBO QUATTRO 24V TT5, 1,9l TDI Passat 3B AFN AG4
[ QUOTE ]
Hi!

I have Passat 3B (europe model 1999 110hp) It have 4 gear automatic but how I know if it is 01M model?

[/ QUOTE ]

it is a 01N on the Passat 3B, increasing the line pressure is easier than on the 01M:




 

Bjornis

New member
Joined
Apr 27, 2004
Hi!
This mod seems interesting, just wondering. Can I do this on my 5-speed tiptronic (2000 passat 1.8t)?

/Bjornis
 

Bjornis

New member
Joined
Apr 27, 2004
Anyone knows if this is only for 4-speed auyo or is this a similar way to do this on 5-speed tip????
 

KERMA

Vendor , w/Business number
Joined
Sep 23, 2001
Location
here
TDI
99 beetle and 04 jetta
[ QUOTE ]
Anyone knows if this is only for 4-speed auyo or is this a similar way to do this on 5-speed tip????

[/ QUOTE ]

only one way to find out...
 
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