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voltage regulator
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  1. E90/E91/E92/E93 (2006 - 2013)
    New member looking for answers. I replaced the voltage regulator (VR) on my alternator. While pulling out the VR I threaded one of the screws with Phillips Screwdriver head. I didn’t bother putting it back on thinking maybe all it does is hold the VR. I might be wrong. This morning the car...
  2. E39 (1997 - 2003)
    Hello, A little help needed. I searched for an appropriate thread but didn't find. Anyway, last weekend, about 100km from home, my battery light came on. I used the OBD check test No. 9 to get a live voltage readout and it was showing around 11.5V. Turned everything off and drove home and just...
  3. X5 E70 (2007 - 2013)
    I have a 2008 X5 with adaptive drive so requires 220AMP alternator. Cheapest I can find online is around $700. Was wondering If I should get a voltage regular (~150) since I'm pretty sure the issue is with the regulator and not the alternator itself. Anyone ever tried replacing just the...
  4. E46 (1999 - 2006)
    Performance Volt Chip. Anyone heard of this? Anyone using it? I just happened on a site that was selling them. Performancechiptuning.com It makes some sense. I'm just thinking, could it really make a difference:dunno:?
  5. E46 (1999 - 2006)
    Greetings all, In troubleshooting repeated voltage regulator/alternator failures, I discovered a circuit that seems to be bleeding voltage into the chassis or something. I started by finding continuity between the positive battery cable (disconnected from battery) and the chassis and then rigged...
  6. E36/7 Z3 (1996-2002)
    Hello, I have a 2001 Z3. I have noticed lately that when the RPMs are around 3K or higher, the radio loudness increases and decreases when I have stopped or when I am below 3K. Is this the voltage regulator going bad? What is the stock alternator's amp output, is it 80, 120 or 140 amps? Any...
  7. E30 (1982 - 1993)
    Ok i was driving yesterday and all of a sudden my radio shut off and my low beam, liscence plate and rear brak light warning lights came on. 20 mins later when i got home, i cheked all my lights and even though the warning lights were on, all of my lights worked on the car. So then I popped the...
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