Subject	Confirming bad alternator diag. + hi amp alt question
Posted by	treese88 on May 16, 2012 at 4:10 PM
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Message	At idle (UR pulley) voltage readings: A/C + headlights on + stereo on: 12.5v A/C + headlights off + stereo on (not loud): 13.4v Driving: ~14v From what I understand a healthy alternator should have me at 14v regardless. Alternator is one of the few things I haven't purchased new as it looked rebuilt when I installed (engine wasn't in car). I've never been able to get a smooth idle, but driving around the car runs fine. Could low voltages at idle cause issues? I don't see any power steering leaks above the alt which I know is the common cause of failure. Considering purchasing one of the "hi amp" alternators for sale. Is there any reason to purchase more than a 120 amp alternator? Found some positive reviews on here for eagleautoelectric alternators, but most went with 180 amp version which seems like overkill. '91 TT
Follow Ups	Confirming bad alternator diag. + hi amp alt question - treese88 16:10:56 05/16/12 You're OK, voltage range should be between 13.5v and 15v (n/m) - njz 19:49:16 05/16/12 2nd. Your alternator looks fine to me too. Your - doug8867 06:49:20 05/17/12 One less thing to replace. Thanks guys. - treese88 09:42:25 05/17/12 I was also under the impression that the battery - 300ZMang 10:38:04 05/17/12 Consistently higher than 14.3v on our cars can - doug8867 10:56:39 05/17/12 Gotcha, thanks for clarifying (n/m) - 300ZMang 11:02:34 05/17/12
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