3g alt.
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More Turbo
Joined: Apr 2009
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3g alt.
with the eng. running i have a little over 14 v with a load of say lights it drops to around 13.5-7 v wipers on it drops again to 13 v with tha air on it drops to 12.5-7 v and my temp ind. goes up past 210 . turn the air off and temp drops to 200 or so turn lights off temp goes down to 185-190 with more items on my temp ind goes up more byt the voltage drops more it should not drop that low with a load should it ?????
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Joined: Jan 2001
Posts: 57,014
Likes: 2,751
From: Virginia
It may be your idle rpm or your belt tension. Make sure the belt is tight. Then while doing your testing, raise the idle of the engine a little bit. It may be turning too slow. If you have retro-fitted this onto a older engine with the original pulleys, you may need to change the pulleys on the engine if you have that option. If you compare a 60's or older engine to a 70's-up engine, you will notice the pulleys are made to turn the fan and the alternator faster, to help with cooling and all the electrical accessory loads.
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