Charging problems

[live67]

Dear All,

First let me explain the problem.

I have a Honda Civic EK4 1996 model (SiR)

I always had electrical problems, with battery charging, but it would occur on and off for years.

I swiped the alternators back and forth between a foreign used engine (same SiR type engine) and my original one, but the problem persisted.

I had a voltmeter installed on the pillar bar and I could see that the voltage would fluctuate from 14V charging back down to 12V and then back up to 14V. When I stopped and put the car in neutral, the voltage moves from 12V back to 13.8-14V charging. This fluctuation only occurs after the car gets up to normal operating temperature.

Sometimes when I shut off, the car would not respond to starting again. Finally it got worse, to when, I had to jumpstart the car many times in the last few weeks, because when ever I park and shut off (usually after a long drive from POS to Trinicity), I would have difficulty starting back up.

Ultimately, I changed the used alternator to a brand new (never used) one and now in addition to the fluctuating voltage, the battery light comes on, and the voltmeter stays at 12V.

I have sufficient grounding, from the battery to the chassis, from the battery to the area by the thermostat, from the tappet cover to the front metal and other grounding locations. I even went by Congo in Diego Martin, who put another ground from the alternator case to the chassis. All groundings are clean. The engine compartment has be engine washed.

I changed the battery to a new battery, I changed the alternator to a new alternator, and I had the mechanic check the starter, which he says is in great shape.

The mechanic put a new wire running from the alternator directly to the battery.

Still the problem persists.

I need some help.

Thanks for any suggestions.

[JesuEric]

Check the wire harness for the alternator
Cud have a break on it somewhere the both wires one is for actually charging the batt and one goes to the instrumental cluster that sends the signal to charge the battery odds are is the other wire as it's not sending current for the battery clearly

[Wolfstein]

One out of two thing either the exciter wire does not have a voltage in it or you have a bad connection some where those alts have a 4 pin jack if I'm correct. Unplug the jack might be kinda tough where those alts are located and check the the first two pins on the jack one should have 12 volts in it and the other nothing if you Dont see at least 11.8 then that's your problem right there.