adjust auto transmission line pressure

[chewyboy]

just thought i'd throw a bit of info in here. if you are doing your filter/oil change you dont need a vag-com to do it correctly. if you know someone with an Infrared Thermometer, or have one yourself, keep it on the bottom of the pan and it will read within a degree or two of the actual temp.

 

[enatman]

My 2000 jetta tdi has 248000 on it..I noticed thatwhen i got warm it wouldn't shif into 4th gear (automatic). It now won't shift into 1st or 4th (gotta do 1st manually) We replaced the solenoids and the valve body..same error code..is this along the lines of what you were running into?
I was told it was the main computer?

 

[rpmjunky]

so it's been verified that we can not perform this mod on 01V TIP tranny...

how about on 09M (i think for 5 speed tip on mkiv jetta/golf) tranny??? can we perform this mod on that tranny???

anyone???

 

[BudsBug]

I want to do this and I will need to change my filter/fluid in the spring should I use the VW fluid as I have 100k mile drive train protection from VWOA I only have 50k the bug was off the road in winters until this year fuel will kill ya now.
I have a Y2K Buglet (2000 NB)

 

[hagar]

God info here. I have 133000 miles on my 2000 automatic, ad while it shifts good, it's probably time to at least replace the fluid.

 

[Golf_GTDI]

Glad to see this back up. I have had lots of contact with folks of late who wish to hop up their auto TDIs and I tell them to find this... now they don't have to look as hard.

 

[BudsBug]

ttttttt

 

[Judson]

2001 Jetta TDI auto here. I did the line pressure mod and changed my tranny fluid a year and a half ago.

Absolutely no problems whatsoever. Great mod.

FWIW, FYI, and all that jazz!

 

[4vdubs]

2001 Jetta TDI auto here. I did the line pressure mod and changed my tranny fluid a year and a half ago.

Absolutely no problems whatsoever. Great mod.

FWIW, FYI, and all that jazz!

Judson:

What changes/imrovements did you experience with this mod? I plan to be doing this over the next month or so when I get a warm weekend.

Scott

 

[Judson]

Shifting is much, much crisper. Drive to Reverse, much faster. Shifting up through the gears, much faster, much tighter. Like a totally different transmission.

(It is also argued that it reduces wear since the tranny doesn't slip as much.)

 

[SprayPaintSpecial]

Well my tranny phantom is back..Ive got a 2000 1.8T Jetta GLS and After about 30 minutes of stop and go traffic it has a hard time shifting out of first and will rev to about 5500 or 6000 rpm before it actually shifts. IF the car is on the interstate it will cruise all day, but stop and go makes it act up. I was wondering what sort of solution someone could offer for this. I was thinking seriously about trying this screw technique and wondered if anyone with a similar problem had tried it.

Also, does anyone have a link to a tech site with the information needed to change the Tranny Fluid on an MK4 Transmission? I've got a spot at a garage...but not totally clear on the process, just looking for something to read over to guide me. Thanks

 

[SprayPaintSpecial]

anyone? Changed the fluid and its still acting the same

 

[Judson]

Spraypaintspecial - when you shift from park to reverse, does it take a couple of seconds to go into reverse?

 

[ddet81]

tranny troubles

SprayPaint,
That sounds a lot like the issue that I am having with my 2000 automatic. My solution was to keep driving it until it burnt out on the bay bridge.. It felt like it wanted to shift into 1st instead of 3rd (not good). It was rebuilt and has broken down another 6 times under warranty with the rebuild shop. Now the shop is putting nails in my tires and the wrong type of oil in the car because I filed a complaint with the BBB and local Consumer Affairs group. It useually works ok for a little while until the next time I get stuck in traffic on a hot day.
I believe it is over heating in stop and go traffic which causes thing to slip which causes things to overheat more. The mech says that the transmission cooler "has good flow" when I suggest that he pays for the replacement, but has also blamed the issue on the transmission cooler, glow plugs, alternator and radiator.

Good Luck,
David

 

[LurkerMike]

2000 Jetta Automatic with 60k miles

Had no problems to report but since I am new to water pumper VW's I was unhappy with how soft and slushbox feeling this tranny was... I just "felt" the extra heat and wear from all the slow slipping shifts and it made me grit my teeth and worry about premature tranny failure.

60k miles is waaay past where I like to do trans fluid and filter. Any automatic that was never serviced in over 100k miles makes me fear changing the fluid at all because I fear the new fluid might dissolve too much gunk and kill it. If you do the filter and fluid every 20k miles, you keep a cleaner slushbox than flushing it every 50k miles IMHO. And that has got to be a good thing as fresh, unburnt, unblackened ATF is probably better at lubricating and heat dissipation than 100k mile abused, oxidized ATF.

A little less than 3 quarts of darkish brown fluid came out, you could see where it was originally yellow or golden like motor oil. It wasn't burnt, just dark.

Cutting open the filter showed only a few small flecks of unknown metal. The pan had a 1/8" thick film of what I call "black and silver metal muck sediment" covering the bottom and the magnet. All and all very typical for most any 60k mile automatic. No signs of paper clutch material.

I did the Kerma line pressure mod and got 32 clicks before it got tight.

Then I closed it up with a dealer filter and a new dealer pan gasket ($$$$ YEE-OWWCH!!!).

I filled it with 3 quarts of red Amsoil ATF and fired it up.

I cycled it from reverse to drive a few times while still up on my ramps and let it idle until the pan felt warm and the engine temp indicated 190* which is the normal full temp spot. I checked it wearing rubber gloves and a few ounces drained out which was to be expected as a little less than 3 quarts came out and 3 full quarts went back in.

I have not yet bought a VAG COM and I don't have a working thermometer. I just guessed but would bet that I was plenty close enough.

A day later I took the car to DavidBru for a new TB and some other work and had him drain and refill it with Amsoil using the VAG COM. This helped get more of the used ATF out that was in the torque converter, valvebody and such.

It shifts like a normal domestic car now. I am VERY pleased. Even David seemed to be impressed with the difference.

I have only one fear now...

In the future I plan to do the Kerma 357 nozzles and to have Jeff do a Rocketchip chip for me. Will the tranny become too "harsh" shifting with the extra power and "Sport Mode" transmission electronic tuning?

 

[Aooo]

Hi all
Does my European 2002 Golf 2L CL 4 speed automatic (115hp) have that same 01M gearbox please?

 

[djrm]

i tried to do the mod but found a pin through the center of the star shaped screw. anybody else find that? i couldn't turn it at all. very dissapointing. how would a pin get in there?

 

[DPM]

Maybe they've made it a tamperproof screw?

 

[carlstev]

Hi all
Does my European 2002 Golf 2L CL 4 speed automatic (115hp) have that same 01M gearbox please?

Auto trans identification helper here - http://www.autoshoppingcenter.com/VW/VW_transmissionsID.html

 

[Occams_Razor]

i tried to do the mod but found a pin through the center of the star shaped screw. anybody else find that? i couldn't turn it at all. very dissapointing. how would a pin get in there?

It would help if we knew what year your car is?

 

[djrm]

my car is a 95 golf

 

[Jlawrence]

Hey Kerma and everyone else,
My 01' Jetta TDI pauses before it shifts into gear from a standstill and reverse is particularly slow at times. I had the Tranny service but it didn't help. Would your adjustment idea help this problem?
Thanks...John

 

[alphaseinor]

well on mine the locking tabs are not there... I just tightened the little plastic screw about 3 turns before it had some resistance... hopefully it won't back out. It'll bark second... love it!

I can tell you a few other horror stories while I was in there, but that's for another thread... let's just say I saw a total of three rubber o-rings and two filters today... and a boatload of redish brown standard ATF.

 

[jnam03]

My wife and I own an 01 NB and I am interested in performing this mod, as the vehicle suffers from the same problems as described in this thread (choppy shifts, slips after long highway travel, searching on occasion). The only thing I am worried about is firmness after the mod. Since my wife is the primary driver, I don't want to do anything that might make her driving experience unpleasureable. Can the firmness be compared to that of any other vehicle.

 

[Slave2school]

It's firm, but it's not going to snap your neck back like poorly completed 5spd shift. If you don't want it at maximum stiffness just turn the star wheel in like 15-20 "clicks". IIRC I got 35 or 38 clicks out of mine and it might be a bit on the stiff side for the average guy that just wants to improve the shifitng a bit. That said I just changed the tranny fluid after about 40,000km and trailer towing over the summer and there was just a light grey film on the magnet with mine set up as it is, I was expecting alot worse since I beat on it.

 

[Jetta_Pilot]

Post removed

 

[TDI'watcher]

In the future I plan to do the Kerma 357 nozzles and to have Jeff do a Rocketchip chip for me. Will the tranny become too "harsh" shifting with the extra power and "Sport Mode" transmission electronic tuning?

I'm wondering the same thing. I already have RC II and am set to 'sport mode' for the tranny. I'm at 90,000 and will have the tranny fluid changed in the near future.
Will this mod be useful for me and/or dangerous, "harsh" to the tranny?

 

[Occams_Razor]

I'm wondering the same thing. I already have RC II and am set to 'sport mode' for the tranny. I'm at 90,000 and will have the tranny fluid changed in the near future.
Will this mod be useful for me and/or dangerous, "harsh" to the tranny?

Useful. I have 2 cars with the Kerma Pressure Mod. Both cars running RCIII, (the NB is even running the RCIII ASV maps with Sprint 357's! The wagon has a regular RCIII with PP520's), and the Sport Trans Programming.

Neither one of the cars is harsh as long as you don't go nuts when you first chip and reset the tranny, (like I did when I first got RCIII in the wagon ). Drive it normally.

As for the fluid change it should probably be done no later than 50,000 miles and even better if done every 36,000, (including the filter and cleaning the pan).

 

[farmertdi]

i tried to do the mod but found a pin through the center of the star shaped screw. anybody else find that? i couldn't turn it at all. very dissapointing. how would a pin get in there?

Make sure you're looking in the right position. There are a couple of "sockets" with a pin through them. Look for the star shaped hole. See the pictures at the beginning of this thread.

 

[dpbl]

I have done some searching but I cannot find an exact answer.
Can someone that know please post the steps to reset the auto trans.
From the many post I am not clear if you shut off the ignition and then restart or you turn the key to start right after you let off from holding to the floor for 10 sec. Have VAG-Com if that can be used.


Thanks