ALH Automatic reliability

wildn

Well-known member
Joined
Oct 19, 2019
Location
Ventura,CA
TDI
2002 Jetta TDI wagon 5spd! 2011 Jetta JSW TDI DSG
Im looking at an Auto ALH 02 jetta with 182k on it and Im just curious how reliable is the 4 speed in it?
Also is a ALH easier to work on than a BEW for someone with moderate mechanical skills?
 

mr.loops

Veteran Member
Joined
Nov 24, 2010
Location
Kelowna
TDI
2002 jetta, 2003 Bora 1.8T
Heads up. Peeps are going to tell you to a) swap it to a manual or b) buy a manual TDI car

The 01M is said to be one of the worst automatic transmissions vw put in their cars.

YMMV


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Nero Morg

Top Post Dawg
Joined
Oct 19, 2017
Location
OR
TDI
2014 A6 TDI, 2001 Jetta TDI, 2014 Passat TDI
So I heard through the grapevine that they aren't that bad, so long as you get a trans cooler relocation kit. Any of you heard of that?
 

BobnOH

not-a-mechanic
Joined
May 29, 2004
Location
central Ohio
TDI
New Beetle 2003 manual
I have, but I spend too much time reading on these forums. I had an inkling that deficient cooling contributed to the early demise of the 99.5(98nb)-2003 automatics. Have not seen verification, most recommend to just avoid the 01m.
 

flee

Veteran Member
Joined
Sep 19, 2011
Location
Chatsworth, CA
TDI
2002 Jetta GLS wagon
Im looking at an Auto ALH 02 jetta with 182k on it and Im just curious how reliable is the 4 speed in it?
Also is a ALH easier to work on than a BEW for someone with moderate mechanical skills?
If the auto trans is original, be aware that 180k mi is a reasonable expected lifespan.
I got about 185k mi and then needed to rebuild. 30k mi or so on the rebuild so far.
Either engine is fairly easy to do routine work on.
 

TLH_TDI

Veteran Member
Joined
Dec 25, 2003
Location
Florida
TDI
2002 Jetta Wagon
Just recently sold my 2000 Jetta with an 01m, it had 290k on it. When it would start slipping in 4th I replaced the valve body and it was fine. If pushed after it starts slipping it will cause other problems.


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Meister Kraft

Veteran Member
Joined
Mar 6, 2016
Location
Bellevue, WA
TDI
2001 Jetta
Just recently sold my 2000 Jetta with an 01m, it had 290k on it. When it would start slipping in 4th I replaced the valve body and it was fine. If pushed after it starts slipping it will cause other problems.


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This sums up 90% of the issues, they are in the valvebody most the time. I would fear it i’m Running 350k miles on my second trans. As long as the body and interior are good I would buy it.

With that said the manuals really aren’t bad in traffic, seriously consider one if you can.
 

wildn

Well-known member
Joined
Oct 19, 2019
Location
Ventura,CA
TDI
2002 Jetta TDI wagon 5spd! 2011 Jetta JSW TDI DSG
This sums up 90% of the issues, they are in the valvebody most the time. I would fear it i’m Running 350k miles on my second trans. As long as the body and interior are good I would buy it.
With that said the manuals really aren’t bad in traffic, seriously consider one if you can.
I'm seriously considering the 2002 ALH Jetta; it's super clean and coming from what seems like a trustworthy TDI specialist, Or there's a '05 BEW Jetta for the about same price about 5hrs away that's a 5 speed with 232k.(both around 4k)

Between the two the ALH's interior and exterior are super clean verus the BEW which is a little bit rougher but not terrible. The main thing I'm worried about the auto trans going out. And im not that confident in my ability to swap in a manual.
 

Mongler98

Top Post Dawg
Joined
Mar 23, 2011
Location
COLORADO (SE of Denver)
TDI
98 Jetta TDI AHU 1.9L (944 TDI swap in progress) I moved so now i got nothing but an AHU in a garage on a pallet.
everyone complaining how unreliable this trans is, still gets 2 to 3 times the mileage of most gasoline engine transmissions.
 

Nero Morg

Top Post Dawg
Joined
Oct 19, 2017
Location
OR
TDI
2014 A6 TDI, 2001 Jetta TDI, 2014 Passat TDI
I beg to differ with that. Two Hondas, over 220k each, camaro 700r4, 280k on it. Rip was rear ended in that one.
 

Meister Kraft

Veteran Member
Joined
Mar 6, 2016
Location
Bellevue, WA
TDI
2001 Jetta
At the end of the day it’s you, who needs to be happy with the decision.

If this vehicle is a daily and 40ish mpg is good enough, then enjoy the hot coffee, keep the Tim’s warm on the passenger seat, a seat heater for you and auto box for a relaxing commuter.

If you want around 48+ MPG and don’t mind shifting then buy a manual install a stock clutch assuming it doesn’t have one, swap out the injection pump to the larger one found in the automatics and give it a set of injectors. Focus on maintence and suspension bushings and that vehicle has the potential to out last all of us.

Contact mark Malone for a clean/powerful tune, great group to work with
See a member “drive by wire” for your injectors, he can balance them
IDParts is a great place for most if not all items

The BEW engine was smooth compared to the ALH and a lot quieter. If memory serves me right I think the BEW engine had issues with the cams and lifters and a host of emission component issues. Most items given the age should have been fixed by now with new part updates/designs. I don’t recall a difference in MPG between the two engines but it’s something to research.

I prefer an ALH MK4 jetta or golf, most repairs are very quick and it’s simple. I enjoy a good challenge but I would rather sit back at a lodge in the mountains drinking with friends than fixing my vehicle all weekend.

Ohh one last thing, and this really is the most important...DONT RUSH INTO A PURCHASE!!! Believe me when I say another one will show up, and it might be in better condition.
 

oilhammer

Certified Volkswagen Nut & Vendor
Joined
Dec 11, 2001
Location
outside St Louis, MO
TDI
There are just too many to list....
The biggest issue with the 01M isn't that it is so awful, just that it isn't in step with the rest of the car in which it is used in terms of durability. Plus, it is expensive to replace. LOTS of automatic transmissions are only good for ~150k. Our shop replaces them constantly in all kinds of things. But if you had a Chevy Traverse that actually made it to 150k and the 3.6L's chains haven't flown off, or the suspension hasn't fallen to pieces, or the brake lines haven't all rusted away, and the trans died, you'd not bat an eye. It's a Traverse... 150k and it is used up anyway.

But an ALH Jetta or Golf at 150k is just a baby. Simple, reliable, super easy to service, lots of fun upgrades can be done, so if ITS transmission died at 150k miles, you'd be pissed. Because the rest of the car was still so good.

I would place the 01M in the area of a '3' in a 1-10 scale of durability, with a lot of Chrysler 41TE, 42LE, and some of the Ford AXOD and 4R70W and GM 4L60E transmissions being worse, with longitudinal Aisin slushboxes easily gaining the top spot of a '10'. Those really are the ONLY automatics (conventional torque converter/wet clutch pack/ planetary type) seemingly able to claim an "indefinite" lifespan under most normal conditions.

That said, at this stage of the game, the newest ALH cars are now a whopping 17 years old. So really the overall condition of the car, regardless of how many pedals it has, should be taken into consideration. I'd not turn down a clean, nice, well cared for ALH+01M if the price was right. You can always fix or even convert the transmission. Not so easy to make the body and interior look good again if it is trashed.
 

BobnOH

not-a-mechanic
Joined
May 29, 2004
Location
central Ohio
TDI
New Beetle 2003 manual
I'm seriously considering the 2002 ALH Jetta; it's super clean and coming from what seems like a trustworthy TDI specialist, Or there's a '05 BEW Jetta for the about same price about 5hrs away that's a 5 speed with 232k.(both around 4k)

Between the two the ALH's interior and exterior are super clean verus the BEW which is a little bit rougher but not terrible. The main thing I'm worried about the auto trans going out. And im not that confident in my ability to swap in a manual.
Then we're done. Get the '05 or keep looking.
 
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