Marc Abrahams Posted June 10, 2013 Report Posted June 10, 2013 The higher I rev my engine the greater the volt drop. 12.80v off, 13.98v idle and at 2000rpm its 12.78v . It goes less the more I rev it up
Trey_Dog650 Posted June 10, 2013 Report Posted June 10, 2013 Well that doesn't sound right 13 Kia Forte Build! 07 Hyundai Accent Build ***Super Seller*** N8ball2013 And then he gets to say ok all you guys were right. im sorry for being a dummy poo poo head.
SnowDrifter Posted June 10, 2013 Report Posted June 10, 2013 Where are you measuring voltage? ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
covi1234 Posted June 10, 2013 Report Posted June 10, 2013 Is the belt slipping? Or is the tensioner not tensioning? That's all I can think of.
masterbusa2 Posted June 11, 2013 Report Posted June 11, 2013 Unless maybe when u rev something big electrical is turning on and pulling more power causing it to drop lower? Edit: Like compressor not workign then revving up makes compressor clutch catch and drag it down? idk just shooting out stuff
covi1234 Posted June 11, 2013 Report Posted June 11, 2013 That would have to be something Big to pull that much power
Marc Abrahams Posted June 12, 2013 Author Report Posted June 12, 2013 I put a new belt on, the belt only runs the alternator and water pump. Its a small vehicle, no AC or PS, very straight forward. I measure the voltage on the battery terminals and from alternator B+ to batt neg and chassis and the reading is the same, checked all grounds as well.
Marc Abrahams Posted June 12, 2013 Author Report Posted June 12, 2013 Where are you measuring voltage? I measure the voltage on the battery terminals and from alternator B+ to batt neg and chassis and the reading is the same, checked all grounds as well.
Hellbilly429 Posted June 12, 2013 Report Posted June 12, 2013 sounds like the voltage regulator is shot, might need a new alternator 2018 Honda Civic Sport Hatchback (build in progress) NVX Sound Deadener (Front Doors) Stinger FAST Rings Stock Electrical SSA Evil 6.5's Front Speakers Stock rear speakers MB Quart ONX4.80 speaker amp Rockford Fosgate T-1500bdcp DC Level 4 12" D1 @ 2-ohm Box In Design Stage Stock RadioMy Build Log
Marc Abrahams Posted June 12, 2013 Author Report Posted June 12, 2013 I found a blog forum on the issue, said the following : What do you guys think? Voltage RegulatorNearly every automobile alternator-generator unit is coupled with a voltage regulator, which determines the actual output of the alternator. The voltage regulator detects the charge level of the battery and can decrease the voltage output of the alternator once the battery is nearing full capacity. As a result, the voltage output from the alternator, as it produces electricity for the vehicle's battery, may drop once it has reached higher RPMs if the electrical load requirement is low.Read more: Why Does an Alternator Drop Voltage When Sped Up? | eHow http://www.ehow.com/info_7791228_alternator-drop-voltage-sped-up.html#ixzz2W11n1YWx
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