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Author Topic: 1998 Jetta AHU, what alt does it have stock?  (Read 3012 times)

January 29, 2011, 06:31:37 pm

8v-of-fury

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1998 Jetta AHU, what alt does it have stock?
« on: January 29, 2011, 06:31:37 pm »
I was wondering what amp alt my TDi motor has on it from the factory?

It was an A/C model if that helps any.



Reply #1January 29, 2011, 06:59:46 pm

G60ING

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #1 on: January 29, 2011, 06:59:46 pm »
I was wondering what amp alt my TDi motor has on it from the factory?

It was an A/C model if that helps any.

120amp

Reply #2February 01, 2011, 09:37:51 pm

catlin_cava

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #2 on: February 01, 2011, 09:37:51 pm »
120??? I would figure a 90AMP, my ALH TDI only had a 90 on it
Catlin

2012 VW Golf 2.5 5speed Deep Black Pearl
1999.5 VW Jetta TDI Bosch .216mm injectors and Malone stage 2, soon 11mm pump and vnt 22(parked for the winter)
2010 VW Golf City 2.0L "Hers"

Reply #3February 01, 2011, 10:03:13 pm

BigVWman

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #3 on: February 01, 2011, 10:03:13 pm »
my 98 ahu has 120 but my neighbors 97 only had 90.
Tim
83 rabbit shell 92 cabby tdi conversion, 91 cabby aba conversion, 87 cabby,  87 gti,  01nb tdi new project,00 1.8t nb, 98 ranger,92 f150 flareside(its pink) 97 cabrio and a 00 cabrio!

Reply #4February 01, 2011, 10:04:46 pm

catlin_cava

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #4 on: February 01, 2011, 10:04:46 pm »
120amp must be an upgraded unit, the highest i've ever seen on a MK3 motor was a 90AMP Unless its a VR
Catlin

2012 VW Golf 2.5 5speed Deep Black Pearl
1999.5 VW Jetta TDI Bosch .216mm injectors and Malone stage 2, soon 11mm pump and vnt 22(parked for the winter)
2010 VW Golf City 2.0L "Hers"

Reply #5February 01, 2011, 10:14:32 pm

8v-of-fury

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #5 on: February 01, 2011, 10:14:32 pm »
weird. When ordering a replacement online I can order either 90 or 120 amp..

How do I tell by looking at what I have to determine 90 or 120?

Reply #6February 02, 2011, 04:00:18 am

catlin_cava

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #6 on: February 02, 2011, 04:00:18 am »

When in doubt takd a bigger one lol! I'm running a 120 right now, we got it when my 90 pooched while on a trip and it was the only thing we could get
Catlin

2012 VW Golf 2.5 5speed Deep Black Pearl
1999.5 VW Jetta TDI Bosch .216mm injectors and Malone stage 2, soon 11mm pump and vnt 22(parked for the winter)
2010 VW Golf City 2.0L "Hers"

Reply #7February 02, 2011, 08:40:49 am

BigVWman

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #7 on: February 02, 2011, 08:40:49 am »
weird. When ordering a replacement online I can order either 90 or 120 amp..

How do I tell by looking at what I have to determine 90 or 120?
The 120 has a big "120" on the rear black plastic housing, the 90 has a big "90" :)
Tim
83 rabbit shell 92 cabby tdi conversion, 91 cabby aba conversion, 87 cabby,  87 gti,  01nb tdi new project,00 1.8t nb, 98 ranger,92 f150 flareside(its pink) 97 cabrio and a 00 cabrio!

Reply #8February 03, 2011, 12:28:45 am

8v-of-fury

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #8 on: February 03, 2011, 12:28:45 am »
oh really?! Why is crap like that so simple ;) I wish all alts, or anything electronic had all its needed to know info clearly stated!

Reply #9February 16, 2011, 08:54:58 am

Sandy

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #9 on: February 16, 2011, 08:54:58 am »
The AHU TDI used a 120 amp because of the glow plugs in the cooland flange for the heater.
2  99 A3 JETTA WOLFSBURG'S
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98 JETTA TDI...BUILT NOT BOUGHT
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Reply #10February 16, 2011, 10:07:14 am

the caveman

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #10 on: February 16, 2011, 10:07:14 am »
An ALH may only have a 90 amp if it's automatic, because it doesn't have the extra coolant glow plugs
" I'm a vegetarian,not because i love animals, it's because i hate plants"
1970 Type 3 fastback
1972 Renault 12
1971 Super Beetle 140 HP 159 ft lbs
1987 Fox
1989 TD Jetta
1990 Fox
1989 Fox
1998 TDI Jetta
1990 T3 German MIL Transporter 1.9 na Giles super pump
1997 Jetta GLX TDI

Reply #11February 16, 2011, 02:01:07 pm

8v-of-fury

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #11 on: February 16, 2011, 02:01:07 pm »
5spd CTN O2A ;)

So am I safe to say 120amp? Lol

Reply #12February 16, 2011, 06:09:33 pm

the caveman

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Re: 1998 Jetta AHU, what alt does it have stock?
« Reply #12 on: February 16, 2011, 06:09:33 pm »
5spd CTN O2A ;)

So am I safe to say 120amp? Lol
Yes my son
" I'm a vegetarian,not because i love animals, it's because i hate plants"
1970 Type 3 fastback
1972 Renault 12
1971 Super Beetle 140 HP 159 ft lbs
1987 Fox
1989 TD Jetta
1990 Fox
1989 Fox
1998 TDI Jetta
1990 T3 German MIL Transporter 1.9 na Giles super pump
1997 Jetta GLX TDI

 

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