hi i have a 1990 integra with a 98 model b18b1 in it. i replaced the battery thinking it went bad.the problem happened again 5 days after replacment so i had the alternator checked and it tested bad. installed the new alternator and the same problem is occuring. the battery just doesnt seem to be getting a charge or much of a charge. when i got the car it had the swap and the obd1 alternator in it even though its an obd2 engine. it didnt seem to be a problem for months but could that be the problem?