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1998 Jetta AHU, what alt does it have stock?
by
8v-of-fury
on 29 Jan, 2011 15:31
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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.
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#1
by
G60ING
on 29 Jan, 2011 15:59
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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
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#2
by
catlin_cava
on 01 Feb, 2011 18:37
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120??? I would figure a 90AMP, my ALH TDI only had a 90 on it
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#3
by
BigVWman
on 01 Feb, 2011 19:03
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my 98 ahu has 120 but my neighbors 97 only had 90.
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#4
by
catlin_cava
on 01 Feb, 2011 19:04
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120amp must be an upgraded unit, the highest i've ever seen on a MK3 motor was a 90AMP Unless its a VR
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#5
by
8v-of-fury
on 01 Feb, 2011 19:14
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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?
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#6
by
catlin_cava
on 02 Feb, 2011 01:00
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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
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#7
by
BigVWman
on 02 Feb, 2011 05:40
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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"
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#8
by
8v-of-fury
on 02 Feb, 2011 21:28
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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!
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#9
by
Sandy
on 16 Feb, 2011 05:54
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The AHU TDI used a 120 amp because of the glow plugs in the cooland flange for the heater.
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#10
by
the caveman
on 16 Feb, 2011 07:07
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An ALH may only have a 90 amp if it's automatic, because it doesn't have the extra coolant glow plugs
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#11
by
8v-of-fury
on 16 Feb, 2011 11:01
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5spd CTN O2A

So am I safe to say 120amp? Lol
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#12
by
the caveman
on 16 Feb, 2011 15:09
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5spd CTN O2A 
So am I safe to say 120amp? Lol
Yes my son