Community Q&A Question: Under drive pulleys

Asking About: Mustang SVE 130 Amp Alternator Full Upgrade Kit (86-93) 5.0 5.8


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Under drive pulleys

I have a 89 mustang gt that is currently at idle at 9 volts when I rev it up it goes up but drops right back down, it has under drive pulleys on it would this fix the problem? And would I be able to keep the pulleys on it? Any one else had this problem and was solved by the upgrade?
from Milan |
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Try charging your battery. It may be bad with only 9 volts. This alternator kit should help too.
from Tuscola |
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Yes, this alternator should put you up to about 14.5 amps at idle with underdrive pulleys. I installed this setup onine and performs great, I also notice that my headlights are brighter at night.
from Phoenix |
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