i have a crx with a b18a swap something keeps making my car die overnight. Any suggestion?

 

could be the voltage regulator in the alt.pull it and have it checked at a parts store.

 

I doubt it's this but sometimes the tail light switch will stay on once depressed. But i'm sure you'd notice that. Lol.

 

my ef has the same prob any help would be great

 

the only time i have ever had this happen,it was the alternator.

 

basic diagnosis of a battery that keeps dying is checking for a parasitic draw on the battery. you do this by getting an ammeter or multimeter(in amp mode) and hooking it up in series with the negative battery terminal... CAUTION: check the amperage rating on your meter and make sure it has a decent amp rating. my blue point meter has a 10amp fuse.. i have never blown mine.

dissconnect the neg terminal,
connect the neg lead on the meter to the battery termnial
the pos lead of the meter to the cable.

if you have a draw you will get an amp reading.

if you do, start pulling fuses until the draw goes away, once the meter reads close to zero you know what circut is creating the draw. once you know what circut it is, get a helms manual or look for diagrams online to that circut and find out where the voltage is going.
usually a resistance or a short to ground before a switch in the circut.

hope this helps

btw before going thru all of this check your interior lights and make sure you are not leaving anything on.

-kidfrost

 

hmmm....maybe your doors arent shut all the way?
your domelight can be a cause.

idk i was just throwin in my 2 cents

 

thanks for the help you guys....anything else? im gonna keep trying everything yall shoot at me ive invested to much money into this car...what relay relays do yall think it might be? thanks

 

thanks

 

anyone?

 

why would you pull the alternator when you can check it when its in the car???