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VWDiesel.net The IDI, TDI, and mTDI source.
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alternator reading for RPM
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Topic: alternator reading for RPM (Read 2142 times)
September 18, 2008, 12:15:18 pm
cpv
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alternator reading for RPM
«
on:
September 18, 2008, 12:15:18 pm »
Hi, i had to recently swap my accesory transmision from a V belt to a 6PK from AAZ, in order to fit the AC compressor, and now the new alternator from the AAZ is speenig faster because it has a samller pulley, and as a result the Rpm reading is much higher on the dash,
can the dash be calibrated or the only way is to fabricate a new 6PK pulley with the correct diameter?
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Reply #1
October 01, 2008, 12:26:04 pm
Smokey Eddy
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3468
alternator reading for RPM
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Reply #1 on:
October 01, 2008, 12:26:04 pm »
If you're exceptionally good with electronics i've heard of geniuses making a converter chip where it recieves the frequency from the W and then just multiplies or divides it accordingly. But ... there is an enormous amount of know-how involved with that.
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Ed
Blacked out mk2 AAZ Jetta RIP. You are missed.
White 1999.5 ALH Golf 2dr. Low & wide. Rammed off the road RIP.
Blue 2009 CR140 Jetta CBEA/CJAA. Malone stage 2. EGR/DPF/Exhaust-valve deletes. 2.5" open exhaust. ADP Turbo swap. 1-stage nitrous kit.
THROWN ROD
Reply #2
October 01, 2008, 12:42:45 pm
Smokey Eddy
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alternator reading for RPM
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Reply #2 on:
October 01, 2008, 12:42:45 pm »
That sounds a heck of a lot easier
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Ed
Blacked out mk2 AAZ Jetta RIP. You are missed.
White 1999.5 ALH Golf 2dr. Low & wide. Rammed off the road RIP.
Blue 2009 CR140 Jetta CBEA/CJAA. Malone stage 2. EGR/DPF/Exhaust-valve deletes. 2.5" open exhaust. ADP Turbo swap. 1-stage nitrous kit.
THROWN ROD
Reply #3
October 01, 2008, 03:24:36 pm
allsierra123
Guest
alternator reading for RPM
«
Reply #3 on:
October 01, 2008, 03:24:36 pm »
Will the W post on the alternator work with the gas Tach? It looks as If I have one on my alternator.
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Reply #4
October 01, 2008, 03:43:47 pm
gigaz2
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Offline
626
alternator reading for RPM
«
Reply #4 on:
October 01, 2008, 03:43:47 pm »
you can find instructions on how to convert gasser tachs to work on the W signal
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________________________________________
do NOT follow my advices or opinions!!! you are warned!
Reply #5
October 01, 2008, 05:00:54 pm
Smokey Eddy
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Offline
3468
alternator reading for RPM
«
Reply #5 on:
October 01, 2008, 05:00:54 pm »
THAT is what i was refering to with the electronics and what not.
I'm trying to make an aftermarket tach convert to a W signal.
If you have a VDO one people on here have definately posted invaluble guides on converting them.
Logged
Ed
Blacked out mk2 AAZ Jetta RIP. You are missed.
White 1999.5 ALH Golf 2dr. Low & wide. Rammed off the road RIP.
Blue 2009 CR140 Jetta CBEA/CJAA. Malone stage 2. EGR/DPF/Exhaust-valve deletes. 2.5" open exhaust. ADP Turbo swap. 1-stage nitrous kit.
THROWN ROD
Reply #6
October 01, 2008, 05:37:07 pm
allsierra123
Guest
alternator reading for RPM
«
Reply #6 on:
October 01, 2008, 05:37:07 pm »
I was just going to use the dakota signal converter box looked a lot easier.
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VWDiesel.net The IDI, TDI, and mTDI source.
»
Engine Specific Info and Questions
»
IDI Engine
(Moderators:
malone
,
burn_your_money
,
Vincent Waldon
,
theman53
) »
alternator reading for RPM