Cadillac Seville / Cadillac Eldorado Forum Discussion, A/C causing Battery Voltage decrease in Past Cadillac Vehicle Discussion; Battery voltage reading on dash decreases drastically at stop lights with A/C on....
- 07-27-13 08:07 PM #1Cadillac Owners Member
- Automobile(s): 95 eldorado etc 03 CTS
- Join Date
- Jul 2013
A/C causing Battery Voltage decrease
Battery voltage reading on dash decreases drastically at stop lights with A/C on.
- 07-27-13 08:27 PM #2Cadillac Owners Connoisseur
- Automobile(s): '98 STS (RIP @ 206,xxx miles)
- Join Date
- Sep 2003
- Metro ATL
- 07-27-13 10:26 PM #3
Re: A/C causing Battery Voltage decrease
95 Eldorado ETC w/New Battery measures 12.8 at terminals with DC volt meter, New alternator measures 14.1 on dash upon start-up. Once A/C activated immediate Battery volt drop to 13.4, will hold till warmed up and driving, then at stop lights in drive, with brake peddle depressed, have had volt drop to 11.9, RPM steady around 700. Voltage increases if shifted to N and/or start to drive.
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