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voltage

  1. General E46 Forum
    Hi all, i need your help. My car is e46 318i 2003 with n42 engine, and here’s my story last night i drove my car about 90km and everything’s fine, then suddenly my car is dead,and i meassure the voltage of the battery and it’s 10V, sure it will not able to start the car again, and call my...
  2. General E46 Forum
    I have had this digital volt gauge forever and I finally want to install it in my 2001 325ci can someone help me with this? I don't even know where to begin.
  3. DIY: Do It Yourself
    Back story/ diagnosis - So a month ago my battery/charging system light went on in my 2000 328i. I just happened to have a spare voltage regulator from an old parts car, so I took the alternator and both voltage regulators to Autozone. Current alternator and voltage regulator - fail Current...
  4. General E46 Forum
    Hey everyone! I've been roaming forums for at least 2 weeks trying to diagnose my no start problem. It started at over a month ago we didn't drive the bimmer for a week. Went up to start it and nothing but lights. Tried jumping it, started no problem. I figured it was just a weak battery so we...
  5. General E46 Forum
    OK... I've searched the forum and come across similar scenarios as mine however never exact. I've tried [most] of the suggested remedies including terminals, cabling, etc and have yet to find an answer to my problem. This has been ongoing for a month or so now and I'm almost to the point of...
  6. General E46 Forum
    I was driving home my 2002 E46 325IT When all of sudden there was a loud knock, my abs/brake/DTS and engine lights came on. At the same time my battery light blinked a few times then stayed on. MY car would not accelerate worth a ****. And I kept smelling something acidic. Managed to drive it...
  7. DIY: Do It Yourself
    Hey e46ers. I have a 2002 325xi that will not start. I have narrowed down the issues to a fuel pump problem. Using a DIY video, I have checked the voltages coming from the fuel pump harness and it is reading 5V rather than the 12V that should be supplied. Is this a sign of a possible relay...
  8. General E46 Forum
    Something is draining my battery. After I got it jumped, I tested the voltage and it was over 14.1 so I'm pretty sure its not the alternator. I tested for an amperage drain and when the car was off it read 3.8 mA. Thats pretty normal phantom drain for a car with the cabin lights on and the...
  9. Driveline, Engine & DME Tuning
    This problem has been going on for about the last 2-3 weeks. I have ceramic coated headers with o2 sims that I bought from Anthony at Bimmerbrakes... So here is what happened. 2 Weeks ago, I got a SES light, pulled codes and got O2 SENSOR HEATER CIRCUIT VOLTAGE TOO LOW I reset the code, but it...
  10. General E46 Forum
    Hey guys, I am in need of some advice. I think I understand the charging system pretty well (and my mechanic of a father agrees with me) so we're both kind of stumped. By the way, I'm in a 2003 325i Spt/Prem with 138,000miles on the clock. About 10-12 days ago, my battery light started...
  11. General E46 Forum
    hey guys, I have a quick question when I checked the voltage of the battery on my 1999 323i, across the terminals, while the car was running, I found the voltage was hovering at about 9.3V. Is this normal?
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