Weird voltage problem
06-24-2006, 01:11 PM
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Weird voltage problem
Sometimes my car will die when I come to a stop at random times. It only happens right after I stop, it drops to the idle rpm and then might cut out a few seconds later, say at a stop light. I have been monitoring my battery voltage and see that a lot of the time when my car is running it is at about 12.7 volts, when it should be around 14.4. If I turn my headlights on when it's at ~12.7V while running the voltage jumps up the the correct 14.4, and will drop back down when I turn my headlights back off. What the ****?
Could it be a bad voltage regulator? Is this something I can replace by itself or is it an integrated part of the alternator?
Could it be a bad voltage regulator? Is this something I can replace by itself or is it an integrated part of the alternator?
06-24-2006, 06:28 PM
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Re: (schardbody)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by schardbody »</TD></TR><TR><TD CLASS="quote">i would try checking the voltage coming out the alternator w/ a DVOM w/ accesories on/off, see if the vafc is just reading the voltage wrong. </TD></TR></TABLE>
I doubt it's reading it wrong. The problem happens when it reads the voltage is low, the problem doesn't happen when it reads the voltage is correct.
I doubt it's reading it wrong. The problem happens when it reads the voltage is low, the problem doesn't happen when it reads the voltage is correct.
06-24-2006, 06:58 PM
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Re: (Jizzmaster Zero)
my wifes car does that ****. i slapped in some left over gauges i had when she first got the car including a voltmeter. anyway car had cel on when we bought it for o2, so any way i finally replace that ****, no more cel and then this f*****g voltage thing starts. so anyway she just leaves her climate fan on low all the time and it stays up a little over 14v. but if the fan , or the headlights or something isnt on that **** will drop to 12v at idle. it hasnt cut off yet though. i read in the service manual the eld will cut back alt output if certain requirments arent met. idunno oh her car is a 95 civic ex d16z6.
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06-24-2006, 07:21 PM
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Re: (JSPECSIR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JSPECSIR »</TD></TR><TR><TD CLASS="quote">my wifes car does that ****. i slapped in some left over gauges i had when she first got the car including a voltmeter. anyway car had cel on when we bought it for o2, so any way i finally replace that ****, no more cel and then this f*****g voltage thing starts. so anyway she just leaves her climate fan on low all the time and it stays up a little over 14v. but if the fan , or the headlights or something isnt on that **** will drop to 12v at idle. it hasnt cut off yet though. i read in the service manual the eld will cut back alt output if certain requirments arent met. idunno oh her car is a 95 civic ex d16z6.</TD></TR></TABLE>
Interesting, sounds like I should disable the ELD and see if that fixes the problem.
Interesting, sounds like I should disable the ELD and see if that fixes the problem.
06-24-2006, 07:41 PM
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Re: (Otherguy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Otherguy »</TD></TR><TR><TD CLASS="quote">i think it might be your distro, thats what happend to me. After awile, my dizzy just burnt up and died for good</TD></TR></TABLE>
It's less than a year old, so I hope that's not the problem.
It's less than a year old, so I hope that's not the problem.
07-22-2006, 07:43 PM
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there is nothing wrong with your car. it is suposed to do this. i have searched and searched on this topic and have found the answer. the ecu turns off the alternator when it is not needed. i have found a way to disable that feature, i had a high output alternator on it and with me disableing the ecu from turning it off, the alt went bad.
there is no way for me to tell if what i did caused it to go bad, or if it was just went bad from natural causes.
since then i have had the factory alternator on with the ecu disabled from turning it off and have had no problem.
i will try and find the post where i got my info, you can make your own decision if you want to try what i have done.
there is no way for me to tell if what i did caused it to go bad, or if it was just went bad from natural causes.
since then i have had the factory alternator on with the ecu disabled from turning it off and have had no problem.
i will try and find the post where i got my info, you can make your own decision if you want to try what i have done.
07-22-2006, 07:46 PM
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here is the post i made. just read the whole thing. there is a link in it that tells all about the charging system.
https://honda-tech.com/zerothread?id=1615436
https://honda-tech.com/zerothread?id=1615436
09-23-2006, 06:19 PM
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Re: (Jizzmaster Zero)
FIXED!
I have an A/C switch wired to my ecu for full throttle launch, works the same as if you have a a factory A/C switch.
Keep the switch on, voltage never drops.
Hooray beer!
I have an A/C switch wired to my ecu for full throttle launch, works the same as if you have a a factory A/C switch.
Keep the switch on, voltage never drops.
Hooray beer!
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