Laveen Z34 Posted January 5, 2012 Report Posted January 5, 2012 At night when headlights are on, when I step on the brake pedal the voltmeter goes down to about, i'll say 8,9,10, and the lights dim. Any suggestions? I used to have this problem about 6 weeks ago. Since then, I replaced the alternator with an AC/Delco worked good. FYI, this does not happen during the daytime. Please Help. It's my 93 Z34. Quote
brake Posted January 5, 2012 Report Posted January 5, 2012 Will it come back up when you give it a bit of gas? Quote
Schurkey Posted January 5, 2012 Report Posted January 5, 2012 Time for a test of the complete starting/charging power team. Alternator/regulator, starter, battery, and the harnesses that connect them. First Guess: Alternator or battery failure--perhaps both. Quote
Laveen Z34 Posted January 5, 2012 Author Report Posted January 5, 2012 Take my foot off the pedal and it goes back up. Quote
Laveen Z34 Posted January 5, 2012 Author Report Posted January 5, 2012 Time for a test of the complete starting/charging power team.Alternator/regulator, starter, battery, and the harnesses that connect them. First Guess: Alternator or battery failure--perhaps both. Alternator brand new, battery was charging OK April 2011, harnesses - that I don't know...... Quote
Jprice90 Posted January 6, 2012 Report Posted January 6, 2012 i had a similar problem with my Aurora, it was the LCM connections maybe check the brake booster hoses for any leaks Quote
19Cutlass94 Posted January 6, 2012 Report Posted January 6, 2012 I had the same issue as it was the alt. Theres an issue that you have between the alt battery and wiring. Check the connections. Even with the battery check in april 2011 means absolutely nothing. batteries these days go dead quick and a year is a big difference. Might want to get things checked again. If your battery is hurting/weak, its gonna kill your new alt pretty quick. Quote
jman093 Posted January 6, 2012 Report Posted January 6, 2012 Probably a poor electrical connection somewhere. Battery, alternator, jump start post, a ground, just to name a few possibilities. Quote
Garrett Powered Posted January 6, 2012 Report Posted January 6, 2012 (edited) you can buy parts and bolt them on all day. alternators, batteries, or whatever big alt charge wires, whatever. but you can't fix the key limiter by just buying a wire off the shelf at a parts store. you got to make your own. what I am saying is basically one specific ground is one your total alt output is limited by. Edited January 6, 2012 by Garrett Powered Quote
Laveen Z34 Posted January 6, 2012 Author Report Posted January 6, 2012 I will have my battery tested again. Maybe it is time for a new one. Quote
Garrett Powered Posted January 6, 2012 Report Posted January 6, 2012 why? does your car not start? that is what a battery is for... Quote
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