I own a 93 wagon ex. Just got a fresh F22 swap in it. I got the battery light on, after drving around a few days. I heard it was due to the battery. But the car starts up fine, everythign works, lights arent dim or anything. Not sure why this is on? any clue?

 

I thought the battery light dealt mostly with the alternator? But I"m not 100% on that

 

ic. i will have it checked out 2morow, i searched and read alternator as well, just wanted to dbl check, cause it was from a diff car, wasnt sure if ment something else. thanks for teh quick reply

 

load test the system and that will tell you where the fault is. just don't start replacing stuff without at least figuring out where the problem is

 

how do you load test a system? and what do i look for?

 

Most shops will do it for a $20. It test the battery and alt

 

thanks ............ Alternator was the victim, it crapped out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mark_is_gay &raquo;</TD></TR><TR><TD CLASS="quote">how do you load test a system? and what do i look for? </TD></TR></TABLE>Wanna do it yourself? Got a voltmeter?

Measure battery voltage after it's parked overnight, nothing turned on. Should be about 12.5v, but what's really important is how much it changes for the remaining tests.

Don't start the engine, just turn on all the lights, fans, windows, stereos, jumper the fan switch with a paperclip, whatever electrical loads you can find. Measure battery voltage. It's normal to drop a little, maybe 1/2 volt.

Measure battery voltage WHILE starting the engine. It should drop even further, maybe down to 9 or 10v.

So far that checks the battery.

Now that it's running, the battery voltage should be 14 or 14.5v with everything turned off.

Turn everything back on, measure again. It should still be 14v. If not, your alternator is weak.

ps....
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mark_is_gay &raquo;</TD></TR><TR><TD CLASS="quote">thanks ............ Alternator was the victim, it crapped out. </TD></TR></TABLE>LOL - you posted this while I was writing...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">Wanna do it yourself? Got a voltmeter?

Measure battery voltage after it's parked overnight, nothing turned on. Should be about 12.5v, but what's really important is how much it changes for the remaining tests.

Don't start the engine, just turn on all the lights, fans, windows, stereos, jumper the fan switch with a paperclip, whatever electrical loads you can find. Measure battery voltage. It's normal to drop a little, maybe 1/2 volt.

Measure battery voltage WHILE starting the engine. It should drop even further, maybe down to 9 or 10v.

So far that checks the battery.

Now that it's running, the battery voltage should be 14 or 14.5v with everything turned off.

Turn everything back on, measure again. It should still be 14v. If not, your alternator is weak.

ps....
LOL - you posted this while I was writing...
</TD></TR></TABLE>


Thanks for the help, i am gonna save this for future reference.

 

Figured as much everyone (haha like 2 people, now 3)I've heard of with the battey light on has had something wrong with the alternator

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheMuffinMan &raquo;</TD></TR><TR><TD CLASS="quote">Figured as much everyone (haha like 2 people, now 3)I've heard of with the battey light on has had something wrong with the alternator</TD></TR></TABLE>Yeah, it's a real misnomer. It's actually the 'charging system' warning lamp, but it's a picture of a battery. Go figure.

 

The light is still on, anyway i can make it go away. fuse or take of the negative battery terminal.

 

Take out the bulb. But I wouldn't recommend that.