Jump to content

Voltage drop problem BMW 325i


Recommended Posts

I asked him about regulator and he said it's got nothing to do with it.

Hopefully belt will fix the issue.

Feel the belt after playing full tilt for a while. If it is superhot then that is an indication of belt slip.

With the voltage drop I'm having right now, I'm afraid of blowing amp.

Have a battery load tester (REALLY big resistor)?

Auto parts store may have one, or two.

Could use that and draw power from the alt for a while and see...

Might not be enough load though to cause belt slip.

This post sent with 100% recycled electrons.
2004 BMW M3
Mechman 280A
2 - XS Power XP3000

1 - XS Power D375

500F of Maxwell SuperCaps (soon to be 1000F)
iPadMini2

Dash mounted O-scope
Audison bitOne (Remote DRC MP)
Highs Amp - PPI Art A404
Hertz HSK130 (HSK165 waiting...)
DC Audio DC9.0K
2- DC Audio XL12m2

LEGAL             - 147.3dB @ 41Hz
OUTLAW         - 150.2dB @ 45Hz

OUTLAW         - 145.7dB @ 30Hz
JUNE 2014 SOTM WINNER

2014 COLORADO PEOPLE'S CHOICE WINNER

SOTM BUILD:
http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026

sig-sized6_zps0265e669.png

Link to comment
Share on other sites

Well, the 57.5 belt was way too short.

What I noticed was that the voltage stays at 14.0v at 2-3-4-5k rpm, but as soon as I let the gas pedal go, it still stays at 14.0 5-4-3k rpm and as soon as it passes 2k rpm voltage would drop to low 12's and climb back to 14.0.

So it does look like there might be something wrong with an alternator after all.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   1 Member, 0 Anonymous, 1640 Guests (See full list)

×
×
  • Create New...