What did you do to your MKIV today?

northern diesel

Veteran Member
Joined
Dec 5, 2023
Location
Northern BC
TDI
2006 mk4 TDI Jetta Wagon
What does your boost gauge say, or VCDS logs of requested vs actual?
I'd love to get a boost guage installed eventually, right now the specified to actual seems within range, up until I floor it. The ECU triggers limp mode, and then the numbers are obviously way below specified until I shut it down and try again. Burpod thinks it has to do specifically with N75 mapping, considering the size of the 1856v.
I am hoping for a near mint ALH IC... probably will have to order a new one eventually.
The one I'm running was a wrecker pick that I spent an evening bending tin fins back to relative straightness.
The dirt that I blew out of my old one, and the ALH one made me realize that could be part of the routine maintenance.
 
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braddies

Veteran Member
Joined
Jul 26, 2021
Location
America
TDI
03 golf ALH

Pulled the intake manifold and one bolt took some threads with it

In an attempt to retorque the fastener, added a few strands of aluminum wire into the hole before inserting the manifold bolt. Was able to get it fairly snug (5ft-lbs-ish) and the other bolts held tight so hopefully no leaks.

Thinking of tapping the head for a 3/8 bolt with coarser threads and cranking it in
 
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The Cream Dolphin

Veteran Member
Joined
Feb 22, 2021
Location
Fernie, B.C. originally Dwight, ON
TDI
02 VW Golf TDI ALH 245k
I regularly go 60-70 km after the light comes on, furthest I've gone is 105. If you only went 15 something else is going on.
I have also gone 10̷5km after the light, I wanted a 1450̷km (90̷0̷mi) tank. I was starting to sweat at the end, and not just because I was not using AC or opening windows in the beating sun... I have not done anything to my car in a while, been away for a month and a half, but I did find this mobil1 shirt at a thrift store today.
 

Judson

Veteran Member
Joined
Jan 18, 2001
Location
Cheyenne, WY
TDI
2001 Jetta
Hey Burpod - you mentioned a check valve for the n75. Is that the little hockey puck thing? And that can be safely removed?
Thanks!
Jud
 

burpod

teh stallionz!!1
Joined
Nov 27, 2004
Location
cape cod, ma
TDI
82 rabbit vnt ahu, 98 jetta vnt ahu, 05 parts car, 88 scirocco.. :/
Hey Burpod - you mentioned a check valve for the n75. Is that the little hockey puck thing? And that can be safely removed?
Thanks!
Jud
the little black/white (or maybe blue/black) checkvalve to the n75 can be deleted, yes, as can the vac ball, if you have egr/asv delete the only vac lines you need are:
1) n75 ATM to air filter (or a 3" vac hose + $2 little gas mower inline filter)
2) n75 VAC to brake booster
3) n75 OUT to turbo

i delete that big honky firewall bracket and use 1 10mm nut and put the n75 right on one of those studs. clears up even more space

i also get rid of the silly bracketry around the vac pump (and use a braided stainless feed line), which gets rid of more BS and lets you get the vac pump off in 2 min

thats it
 

wonneber

Top Post Dawg
Joined
Oct 12, 2011
Location
Monroe, NY, USA
TDI
2014 Jetta Sportwagon,2003 Jetta 261K Sold but not forgotten
no, no need for the vacuum ball :p has no affect (and have taken logs to prove it). haven't had a vac ball on any of my tdi's in years, and delete them all the time. same with the little checkvalve to the n75. either something else is amiss in the hardware and/or most likely, the tune just needs adjustments - namely the n75 map... that's all. that little checkvalve can cause problems - just had this occur the other day. very strange crazy overboost problems - then i suggested delete that rats nest of vac lines including the checkvalve to the barebones - after that, problem solved and near perfect boost :)
Isn't the vacuum ball used to hold the ASV closed when you shut the car off and help stop a run away if you shut it off soon enough?
 
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burpod

teh stallionz!!1
Joined
Nov 27, 2004
Location
cape cod, ma
TDI
82 rabbit vnt ahu, 98 jetta vnt ahu, 05 parts car, 88 scirocco.. :/
Isn't the vacuum ball used to hold the ASV closed when you shut the car off and help stop a run away if you shut it off soon enough?
i don't think it really matters, as the engine is still turning so it's still making vacuum. and the ASV only shuts off for a couple seconds anyway...
 
Joined
Dec 31, 2023
Location
Long Island NY
TDI
2006 BEETLE
Greetings…
So my shifter would bind from left to right,not freely move back to center position, making it sort of difficult to shift correctly. But this would only happen once it warmed up.
After research I removed the relay lever on top of trans shift tower. Sticky to remove but pulled it out. Bushings stayed in. Sanded the shaft alot till it moved freely in place. Clean,lube with Mobil1 snthetic grease. Reassemble. and it feels like new. Took me a little over an hour.
Just thought I would pass the info along in case anybody has the same problem.
checked the bushings in the shifter in the car itself and everything looks good.
👍
 

GlowBugTDI

Top Post Dawg
Joined
Jul 20, 2018
Location
Cambridge, MN
TDI
2001 Beetle GLS TDI (BIODSL). 01 original Glow Bug TDI (sold)

Pulled the intake manifold and one bolt took some threads with it

In an attempt to retorque the fastener, added a few strands of aluminum wire into the hole before inserting the manifold bolt. Was able to get it fairly snug (5ft-lbs-ish) and the other bolts held tight so hopefully no leaks.

Thinking of tapping the head for a 3/8 bolt with coarser threads and cranking it in
You'll be good to go. Mine has been missing a bolt for 60k.
 

CanadianALH

Veteran Member
Joined
Aug 21, 2023
Location
Canada
TDI
2002 Jetta 5spd 2006 Jetta DSG (wifes)
Today marks a year and a day with my mk4 ALH. 24k km in a year. It has been my favourite car I have owned by far. I said I would keep it stock and well that hasn’t worked out well… the bigger turbo is going in sometime in the fall. I would like to thank this forum for all the help, information and for the awesome people I have had the pleasure of getting to know a little. Huge thanks to @burpod for taking the car from barely able to pass to barely able to stop passing! Here is to another year in (arguably) the best car ever built.
 

CanadianALH

Veteran Member
Joined
Aug 21, 2023
Location
Canada
TDI
2002 Jetta 5spd 2006 Jetta DSG (wifes)
👍 Maybe it's just the bv39 doing it's thing but sure sounds like a whistling boost leak when spooling, especially noticable when next to a wall or in a tunnel.
I have a similar thing with my vnt15. Found one boost leak and that helped. But still nothing. I had a really good look. I figure my vanes were a little sticky and they finally let loose for good. I guess we will find out when I do my bigger turbo down the road
 
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Nuje

Top Post Dawg
Joined
Feb 11, 2005
Location
Island near Vancouver
TDI
2002 Golf 6MT; 2015 Sportwagen 6MT; 2018 A3 e-tron 6DSG
Almost 20yrs since I bought my first ALH - a 2000 that lasted just a couple years due to my naïveté about black ice....that it could/would form on some bridges while (a) no frost on approaching pavement; and (b) ambient air temp in the 2-3°C (35-40°F) range. :(
Was replaced by "Indy", whose details you still see in my user details. :D
 
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Zak99b5

Veteran Member
Joined
Apr 30, 2021
Location
Albany NY
TDI
2003 Jetta TDI
Greetings…
So my shifter would bind from left to right,not freely move back to center position, making it sort of difficult to shift correctly. But this would only happen once it warmed up.
After research I removed the relay lever on top of trans shift tower. Sticky to remove but pulled it out. Bushings stayed in. Sanded the shaft alot till it moved freely in place. Clean,lube with Mobil1 snthetic grease. Reassemble. and it feels like new. Took me a little over an hour.
Just thought I would pass the info along in case anybody has the same problem.
checked the bushings in the shifter in the car itself and everything looks good.
👍
The real culprit is the metal of the case is corroding and expanding inside that "tube" where the bushings & the pin for that relay lever live. IDParts has new bushings. Get the old ones out, and clean up that hole with a wire bristle brush plumbers use. I actually found a drill bit that fit snugly in there and used that (by hand) as well. Coat the bore with a little grease to slow down new corrosion, install new bushings, and you're golden.
 
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JDSwan87

Black Swamp Thing
Joined
Feb 9, 2014
Location
Michigan near Toledo
TDI
2001 Jetta TDI, 5 speed Lagoon Blue Metallic(sold); 2005 Jetta TDI Wagon auto

Pulled the intake manifold and one bolt took some threads with it

In an attempt to retorque the fastener, added a few strands of aluminum wire into the hole before inserting the manifold bolt. Was able to get it fairly snug (5ft-lbs-ish) and the other bolts held tight so hopefully no leaks.

Thinking of tapping the head for a 3/8 bolt with coarser threads and cranking it in
Fine threads hold more torque.
 

gmenounos

Vendor
Joined
Jun 26, 2003
Location
Watertown, MA, USA
TDI
'99.5 Golf GLS, '01 Jetta GLX Wagon (TDI conversion), Non-TDI: '23 Tesla Model 3 AWD
Almost 20yrs since I bought my first ALH - a 2000 that lasted just a couple years due to my naïveté about black ice....that it could/would form on some bridges while (a) no frost on approaching pavement; and (b) ambient air temp in the 2-3°C (35-40°F) range. :(
Was replaced by "Indy", whose details you still see in my user details. :D
I've had my Golf for slightly more than 21 years. Just needs a muffler...
 

MORTAMIR

Veteran Member
Joined
Jun 2, 2020
Location
Washington
TDI
MKIV GOLF 05 BEW, 05 Jetta Wagon(not rolling),2000 Golf, DURAMAX LBZ, X5 35D
Installed motor mounts. Ordered some oversized caliper pins as one on the BEW golf is toast.
 
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northern diesel

Veteran Member
Joined
Dec 5, 2023
Location
Northern BC
TDI
2006 mk4 TDI Jetta Wagon
Just got the new @burpod tune with my n75 adjusted maps. NO LIMP MODE (yet) !!
The car absolutely rips! It is so hard to not drive fast. I am going to delete the Cat when I get back from my 2 week gig up north firefighting. But this car is wicked fun to drive.
I offered to drive the kids to town again this morning instead of letting them take the bus to school. They told my wife that yesterday we drove 160km/h.
We had to have a little talk about how dangerous it is to speed, and that I shouldn't be encouraging them to drive faster than the speed limit...
So I kept it cool(ish) on the way to town, and then ripped home in a land speed record time.
So fun!
Thanks to the GOAT @burpod for the expertise and all the other side advice I get.

This forum rocks!
 

benmarks

Veteran Member
Joined
Jun 14, 2003
Location
Portland, OR
TDI
2004 Jetta GLS Sedan Platinum Gray
Almost 20yrs since I bought my first ALH - a 2000 that lasted just a couple years due to my naïveté about black ice....that it could/would form on some bridges while (a) no frost on approaching pavement; and (b) ambient air temp in the 2-3°C (35-40°F) range. :(
Was replaced by "Indy", whose details you still see in my user details. :D
Me too, sadly. My brand new 2000 Tornado Red ALH also died on black ice during a long cross-country trip while in West Virginia in the middle of the night. That was also the night I learned how safe these cars are because my car hit the concrete median front/back/front again before coming to a stop. I had that car for 7 years, and I'd probably have used that one as my long-term project if it hadn't died.
 
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csstevej

Top Post Dawg
Joined
Aug 12, 2004
Location
north nj
TDI
2001 golf tdi 4 door auto now a manual, mine, 2000 golf 2 door M/T son's,daughters 98 NB non-TDI 2.0, 2003 TDI NB for next daughter, head repaired and on road,glutton for punishment got another tdi 2001NB,another yellow tdi NB , added an 06 NB DSG
Between rain storms finally removed the vacuum ball , bracket , check valve ( which I found out was bad ) and some vacuum hoses.
Took it for a good test drive and noticed nothing different.
Looks good , got some more to remove and clean up before I install my new injectors from Burpods group buy.
Just need time to myself and to stop putting out everyone’s fires…….
 

Mozambiquer

Vendor , w/Business number
Joined
Mar 21, 2015
Location
Versailles Missouri
TDI
2004 VW Touareg V10 TDI, 2012 Audi Q7 V6 TDI, 1998 VW Jetta TDI. 1982 VW Rabbit pickup, 2001 VW Jetta TDI, 2005 VW Passat wagon TDI X3, 2001 VW golf TDI, 1980 VW rabbit pickup,
Well, I got the 2004 BEW Jetta running great now after getting a tune from the GOAT @burpod and I did the VSS cluster hack for the abs sensors as it was never wired for the transmission speed sensor.
Now it runs awesome!
 

csstevej

Top Post Dawg
Joined
Aug 12, 2004
Location
north nj
TDI
2001 golf tdi 4 door auto now a manual, mine, 2000 golf 2 door M/T son's,daughters 98 NB non-TDI 2.0, 2003 TDI NB for next daughter, head repaired and on road,glutton for punishment got another tdi 2001NB,another yellow tdi NB , added an 06 NB DSG
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