Alternator problems - AcuraZine - Acura Enthusiast Community


Alternator problems

Old 03-09-2019, 06:47 PM
New Member
Thread Starter
Join Date: Mar 2019
Age: 47
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Alternator problems

my son has a 2002 tl and is having a problem. Sometimes when driving the battery light comes on then after a few minutes all the other dummy lights then all lights and guages die then car has almost no power. The first time this happened he was on his way home and just wanted to make it to a safe spot to stop. Anyway he shut car off and waited for me. When i got there the car started right up and ran fine to make it the 8ish miles home.
the car sat for a couple weeks at his house and when i tested battery voltage was a bit low (12.04v) but car would start. 14.2 volts when running. I brought the battery to auto zone to have it tested and it had a bad cell. Battery was replaced at this point. Problem happeed again so I brought my meter to his house the next day. Battery at 12.6v and 14v when running. Today i was with him and car acted up again (first time i have seen it first hand. This time we left the car running and it was at 7v not a typo when i shut off car voltage slowly rose up.
Does this sound like a intermittent alternator problem or a short somewhere? All voltages were taken at battery, tomorrow i will test voltage at the alternator and see what the results are. The hard part is sometimes everything is fine and other times obviously not so. It is difficult when i cant always get the same results
Dan Ruths is offline  
Old 03-10-2019, 10:54 AM
New Member
Thread Starter
Join Date: Mar 2019
Age: 47
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Today i tested the voltage directly at alternator and was pushing around 10 volts with only engine running so i am going to go ahead and say alternator is shot. I have never had one work fine sometimes( 14.2 ) v and not work at others but there is a first time for everything I guess
Dan Ruths is offline  
Old 03-10-2019, 12:21 PM
Registered Member
Iggy's Avatar
Join Date: Nov 2001
Location: Southern N.H.
Posts: 1,379
Thanked 111 Times in 98 Posts
Yank the alternator and take it to O'reilly or any other box store. Most do alternator bench testing, just call ahead.
Iggy is offline  
Related Topics
Thread Starter
Last Post
3G TL Problems & Fixes
10-17-2018 10:51 PM
First Generation TSX Discussion (2004-2008)
11-13-2016 06:09 PM
1G TL Problems & Fixes
07-28-2007 09:57 AM
First Generation CL Discussion (1997-1999)
10-14-2005 04:33 PM
Second Generation CL Discussion (2000-2003)
05-12-2005 07:40 PM

Thread Tools
Search this Thread
Quick Reply: Alternator problems

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.