General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.
Sponsored by:
Sponsored by:

Battery- Alternator Issue

Thread Tools
 
Search this Thread
 
  #1  
Old 06-20-2023, 04:52 PM
btartus's Avatar
Member
Thread Starter
Join Date: Feb 2021
Posts: 105
Default Battery- Alternator Issue

my 1995 Honda Accord LX 2.7L. so the battery light went on but very faded. I took the car to my mechanic, he tested the battery and Alternator and the battery was bad. took the car to Advanced Auto when I bought the Die Hard Gold 2 years ago and he tested it and it was bad. He put in a new battery at no cost, which is great. took the car back to my mechanic and he tested everything again and the Alternator looked ok, but the faded battery light was still on. so im driving home and within a couple hundred yards of home the battery light went off. any advice here is appreciated. the alternator was changed with a rebuilt from Advanced Auto on 4-2019. now that I have a new battery do you recommend a new Alternator and if so should I spend the extra money and get the Denso?

the Denso is re manufactured. I can get a new one made by WAI GLOBAL. I can also get a REMY re manufactured OE Manufacturer: Mitsubishi. not sure what to do.

so much thanks!

bt
 

Last edited by btartus; 06-20-2023 at 05:04 PM.
  #2  
Old 06-20-2023, 05:39 PM
PAhonda's Avatar
Super Moderator
Join Date: Sep 2006
Location: Houston, TX
Posts: 15,647
Default

Not sure if you are doing any DIY work/testing on the car. I'd suggest testing the voltage drop across the battery cables when the engine is running. Simple test. Set your volt meter to voltage. Put the meter on the + battery post and on the large alternator post when the engine is running. You should see <0.5V across that cable. Repeat on all cables from both battery posts.

Another item to quickly test is to use white out or a paint pen and mark a line from the center of the crank pulley out to an edge. The crank pulley (aka harmonic balancer) is really two metal discs glued together with rubber. If the rubber is detached, the outer pulley won't spin with the inner pulley and not drive your alternator. Run the engine for a bit and see if you still have a straight line.
 
  #3  
Old 06-20-2023, 05:41 PM
btartus's Avatar
Member
Thread Starter
Join Date: Feb 2021
Posts: 105
Default

thank you! I will bring this info to my mechanic! got away lucky today getting a brand new battery at no cost.

bt
 
  #4  
Old 06-30-2023, 09:31 AM
btartus's Avatar
Member
Thread Starter
Join Date: Feb 2021
Posts: 105
Default

Originally Posted by PAhonda
Not sure if you are doing any DIY work/testing on the car. I'd suggest testing the voltage drop across the battery cables when the engine is running. Simple test. Set your volt meter to voltage. Put the meter on the + battery post and on the large alternator post when the engine is running. You should see <0.5V across that cable. Repeat on all cables from both battery posts.

Another item to quickly test is to use white out or a paint pen and mark a line from the center of the crank pulley out to an edge. The crank pulley (aka harmonic balancer) is really two metal discs glued together with rubber. If the rubber is detached, the outer pulley won't spin with the inner pulley and not drive your alternator. Run the engine for a bit and see if you still have a straight line.
so I had the Denso alternator installed. problem solved. so now I have a new battery and alternator!

thanks again for your help! much appreciated.

bt
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rockhoundrob
General Tech Help
3
06-29-2020 04:25 PM
Scott Coats
General Tech Help
1
03-17-2017 07:52 AM
devinzmax
General Tech Help
2
08-02-2016 03:33 PM
xbolloxx
General Tech Help
14
12-21-2011 10:19 AM
ditchdoc1017
General Tech Help
14
11-05-2009 02:48 PM



Quick Reply: Battery- Alternator Issue



All times are GMT -5. The time now is 11:58 PM.