Charge light in CRX - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-28-2007, 09:20 PM   #1
Registered Member
 
mrmad's Avatar
 
Join Date: Mar 2007
Posts: 386
Country: United States
Charge light in CRX

The battery (charge) light in my CRX seems to randomly turn on and off, and not related to rpm, except it won't do it when driving constantly above 2000 rpm. This has been going on for the past several weeks. The car has had no problems starting and since it is off most of the time, I thought the warning light output pin on the voltage regulator was malfunctioning. I finally caught it with the light on in my drivewy where I could open the hood and get my voltmeter out. Measuring on the battery terminals, when the light was on, it gave 12.6V and when off it would climb to 14V.

The manual says the voltage should be 13.9-15.1V when the engine is running. Most cars I've had behave like that, not fluctuating between battery voltage and charge voltage. Seems to me my voltage regulator is acting up. Time for a new alternator?
__________________

mrmad is offline   Reply With Quote
Old 06-28-2007, 09:38 PM   #2
*shrug*
 
Join Date: Sep 2005
Posts: 6,195
Country: United States
Does it fade in or not? I would say so, I had the same problem.
__________________

SVOboy is offline   Reply With Quote
Old 06-28-2007, 09:39 PM   #3
Registered Member
 
skewbe's Avatar
 
Join Date: Jan 2007
Posts: 771
Country: United States
check the belt tension/condition. Also the alternator might just need new brushes (and the rings cleaned up). If the dealer doesn't have brushes you may be able to find some at the hardware store that you can sand down to fit and solder the old and new pigtails together.
__________________
Standard Disclaimer
skewbe is offline   Reply With Quote
Old 06-28-2007, 09:46 PM   #4
Registered Member
 
mrmad's Avatar
 
Join Date: Mar 2007
Posts: 386
Country: United States
The belt it tight. The light doesn't fade, it just turns on and off. With the voltmeter, the voltage changed pretty fast. Surprisingly, the alternator is one of the few things the former owner said he replaced and by how clean the thing is, I believe him.
mrmad is offline   Reply With Quote
Old 06-28-2007, 11:49 PM   #5
Registered Member
 
Join Date: Apr 2007
Posts: 21
Country: United States
Send a message via AIM to eivad1 Send a message via Yahoo to eivad1
my light stays on too on my 87 crx, my fan stays on when i turn on the key, but stays on al lthe time and can see the light
eivad1 is offline   Reply With Quote
Old 06-29-2007, 04:55 AM   #6
Moderator
 
GasSavers_DaX's Avatar
 
Join Date: Oct 2005
Posts: 1,209
Country: United States
Voltage regulator is probably on it's way out. Instead of buying a new alternator ($150), find a local starter/alternator shop and have it rebuilt ($30).
GasSavers_DaX is offline   Reply With Quote
Old 06-29-2007, 05:00 AM   #7
Supporting Member
 
88HF's Avatar
 
Join Date: Jun 2007
Posts: 348
Country: United States
or if they bought it from autozone or somewhere similar you could get a replacement using their name or telephone number depending on the warranty.
__________________


my favorite thread
88HF is offline   Reply With Quote
Old 06-29-2007, 07:43 AM   #8
Registered Member
 
GasSavers_bobski's Avatar
 
Join Date: May 2007
Posts: 463
Country: United States
I'll second the brushes. If you have the time to remove and reinstall the alt a couple of times to troubleshoot, the brushes are the cheapest part to start with.
GasSavers_bobski is offline   Reply With Quote
Old 06-29-2007, 08:21 AM   #9
Registered Member
 
mrmad's Avatar
 
Join Date: Mar 2007
Posts: 386
Country: United States
Decided to watch it a little closer this morning. On the freeway (over 2000 rpm), no light. After the 40 mile freeway drive I'm sitting at a left turn light with headlights on, left turn signal on, idling about 600rpm. The light is flashing on with the turn signals, meaning it comes on with the current draw of the turn signals. Turn the headlights off, (turn signals still on) and the light goes out.

So at low rpm, under a current load, the alternator quits charging. Also, the few times I tried EOC and go to start the car with the starter, the charge light will come on for 4-5 seconds.

Seems to me, the voltage regulator doesn't know when to turn on.
mrmad is offline   Reply With Quote
Old 06-29-2007, 08:31 AM   #10
Registered Member
 
GasSavers_bobski's Avatar
 
Join Date: May 2007
Posts: 463
Country: United States
Maybe, but the RPM dependant factor makes me suspect the brushes. If the top most RPM it occurs at (currently 2k) increases as time goes on, that would put the nail in the coffin for me.
__________________

GasSavers_bobski is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to change fuel type JayHoe Fuelly Web Support and Community News 3 06-15-2011 01:14 AM
Fuelly Android App - eehokie Fuelly Web Support and Community News 2 07-14-2010 09:59 PM
The great news about the EPA's new tests repete86 General Fuel Topics 8 02-07-2007 07:01 AM
Greetings kps Introduce Yourself - New member Welcome 10 09-26-2006 06:15 PM
Any ideas how to install this? Compaq888 General Maintenance and Repair 0 12-21-2005 01:46 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 09:56 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.