Hey guys, well let me first start out by saying im working on a jdm b16a in a crx, obviously. Well, recently I started noticeing when coming to a stop light or sign at night the head lights would dim coming to an idle as oppose to being ran at 1500rpm+ .. So I got my meter out and put it on the battery.. Found 12.0 to 12.5v at idle coming from alternator and around 13.8-14.2 when reved above like 1200 or 1500 rpm. So I though the alternator was on its way out the door. So I ordered one of Ebay, with a warranty. I ordered it straight from a manufacturer so im basically eliminating the middle man ( Part store ). Anyway, I get this new alternaot ( btw, I ordered it for 90 integra, and it fit perfect! ) and I install it and all seems to be working well.. Accept now im noticing the car having weird idle problems. Also, the battery lgith in the cluster randomly comes on, but its very dim, and I can feel it putting a load on the motor.. It only stays on for like hald a second then goes back off. Put a meter back on the battery and now, totally randomly, im getting voltage spikes from 14.0 to 16.5.. I really hate to call brand new parts bad so I researched a little more and found that the ELD might be bad. So I got another ELD unit and replaced the one that I have in my fuse box now.. Still getting the same damn thing no matter which ELD I use. To me, it sounds like the internal voltage regulator inside the BRAND NEW alternator is bad.. Any ideas?

 

how many amps is your new altenator pushing? do you know?

 

65 amp..

heres a link to the exact alternator I bought

http://cgi.ebay.com/ebaymotors/ws/eB...m=190330018780

 

All within a one week period I installed JDM Fender markers and wired them to be running lights as well as blinkers and installed an Alarm system as well. Actually, a local shop installed the alarm for me because I was helping a buddy out that needed work so I paid him to install it. Oddly enough, now when I close the door and the dom light is in the position where it comes on when the doors open, if I close the door, the dom light is barly lit and will stay barly lit unless the dom light switch is in the off position, in which case, it doesn't come on at all..

 

Honda's do that, the lights dim when idling or when an accessorie is turned on like ac or heater.

As far as your new alternator, is a rebuilt unit? If so sometimes they are no good! Takes a few rebuilts to find a good one.

For the b16, you should have went with the GSR one. I believe its a 95 amp
and fits right in.

 

crx is obd0 and gsr is obd2.. Plugs are different in back of alternator. I pulling the new alternator out tomorrow and putting the old one ( that charged 12v at idle ) back in and maybe ill bump the idle a little to see if I cant make the car idle around 900 and get the voltage i need just to I get check this new one to see whats going on..

 

Plugs can be swapped.
https://honda-tech.com/forums/showpo...0&postcount=11

I also have a OBD2 alt going in my EDM EE8 (obd0).

 

i used a d16a6 alt on my b16

 

i had a similar problem on my obd0 b16a EF . i went through 3 ls alts, they werent charging enough and 1 of them would instantly pop the main fuse, a buddy told me to go with a 95 del sol vtec alt so i did and works great no probs had for a year almost maybe u need to use that alt also but im not too sure im just a noob

 

Well I put the old alternator back in today and no more voltage spikes.. Just 12v @ idle -_-.. I also called the company I ordered the alternator from and they said they are sending me another one w/ 70 amp and providing me with a shipping label to return ship the bad one I just got. We'll see how #2 works out.

 

same problem. i have a 90 integra with a jdm b16 obd0. i just got my alternator checked and it has a 40 amp reading. but its suppose to be at 70 amps usdm b16 is at 90 amps

 

93-95 GSR has obd1 plugs which is same round plug as obd0!
GSR alternator pulley is 4 ribs also so its a direct fit!



obd2 has different square plugs.

 

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/b16-alternator-choises-highest-amps-2367131/

 

I'm running a 90-93 integra alternator as well on my B16. I think its a GSR, cant remember. I got it because they run more electrical components so the alternator will be higher amps, or something to that effect.

 

Where are you finding this amperage information? According to Denso ( so says the local part store ) , Del Sol Vtec and Integra LS has the same output for amperage of 70/80 amps.

 

If your at an advanced auto or who ever they should be able to tell you the amps when they are looking up the alt.

 

Great Info on alternator compatability and swaping

http://ff-squad.com/wp/?p=425


The 90-93 integras all share the same 70 amp alternator
The 94-95 integras all share the same 90 amp alternator
The 96-01 integras minus the type R share the same 90 amp alternator
The 98-01 integra typeR's use a different alternator made by mitsubishi but it is also 90 amps.



I found this info in this post:
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/integra-alternators-differences-2707014/#post41167898

 

Got the new 70 amp alternator... No more voltage spikes at idle!! yay, everything is working excellent, expect for when the engine is revved above 6500RPM i get voltage spikes again.. WTF? Everything is working excellent, with and without a load at idle the alternator is reading exactly as should. idle - 6400RPM is good, as soon as I hit around the 6500RPM area, I can watch the meter spike up to 17 almost 18 volts then drop back down as the engine comes below that 6500RPM mark. WTF? I think the company im ordering alternators through is a P.O.S.. I've put in 2 brand new batteries.. I even tested one on another car just to make sure the battery was good, and, its good. I've replaced all the grounds, battery, tranny, thermo, valve cover, and I even added an extra around to the intake manifold. I guess you get what you pay for when you order **** off egh3y.. Continious bad internal voltage regulators.. Just to see if its the voltage regulator, I removed the voltage regulator from the alternator that was spiking at an idle and I placed it in my original alternator, that was only charging 12v at idle. Ill stick it in the car this weekend to see if it is indeed the internal voltage regulator causing the spikes.

 

Go to autozone.com
Select different models and it shows all the amps.
Even shows the plugs

 

I know.. Do you think lack of amperage would cause voltage spikes at higher RPM? I thought it might be lack of amps but im getting these spikes with absolutely nothing on inside the car and even with everything is on. No matter what the situation once it goes past 6500RPM the voltage spikes, everytime.

 

*Fixed* I picked up a used alternator off a 95 integra gsr and it went right in and it working perfect. Absolutely no problems and everything is working great! I won't ever again buy a reman alternator.