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Battery stayed charged but worried it may be overcharging. It is reading 15.3 volts while idling. I think this is gonna fry the battery. Any ideas

15 volts at idle on battery. Gonna leave it tonight and see if the battery stays charged.

Alternator is putting out 15

Ok found it had a bad connection going to coil. Started and drove down road with new regulator hooked up and came back and have 14.49 volts on battery while running.

Well darn ran a wire from alternator to starter relay with 30 amp fuse. I left the wire running to ammeter alone. Ran another field wire to the ignition wire on voltage regulator. Tried testing it as recommended by voltage regulator instructions by leaving it unplugged and running test lead from...

Quick update and question. I replaced some of my wires that were frayed and got my wiring diagram and traced all my wiring from the bulkhead. I noticed the wire I thought went from alternator field wire to the voltage regulator ignition (Center pin) was actually supposed to hook up to the AC...

On D.C. On test before. Here's the ohm test between the two alternator fields

Yes that's what I did and showed 0

Did the switch thing for a while. Why wouldn't you just fix the problem? That gets old and pretty embarrassing if you ask me.

Ok I put the meter in amps and doesn't read anything on the field to ground. Other field is connected to starter relay. What should I do next

Ok did what you said. Got spark and ammeter pegged out. Measured voltage from field terminal to ground and was getting 12.6 volts same as battery. You said it shouldn't have not over 6 amps right. My thoughts are alt is charging so run new wires over to vr and check it.

Ok I understand. I will give it a try tomorrow evening. Thanks again.

I really appreciate 67dart273's help. It probably is above my pay grade but I ain't giving up. Spent to much money on this with 3 different mechanics and none of them solved my problem. So now its gonna take me some time but I'm learning about my car in the process.

I did everything you said. No spark on either terminal. I think its a bad alternator. Just to make sure I got it right. The green wire goes on either field terminal and runs over to voltage regulator. The blue wire hooks to the other field terminal and runs over to center pin on the VR. I read...

Thanks for the advice and sorry been working so just now getting a little time to tinker. I'm not sure on alternator which field wire goes where. I have the green and blue field wires. I have swapped them and shows nothing different. Alt. is reading same as battery. I checked all other wiring...

Thanks I have not found anything yet. Was overcharging and now I had alternator bench tested and was putting out 15 volts. Put it back on car and not charging the battery according to advanced. Car running only off battery. I've about pulled all my hair out with this thing. Wiring seems to be...

Here's some pics under the hood. I'm pretty lost on this

Decided to buy a new alternator. Does the voltage regulator on firewall need to be hooked up again since going with a 2 wire?

Mechanic swapped my alternator to a one wire during a engine swap. Now the car is eating batteries left and right. Still charges at 14 but just checked draw on negative cables and had 12 volts. Disconnected alt. And draw went to 1.3. I'm new on working on cars so any help is appreciated and you...

I got one already. Apologize for not taking it off.

We'll here is what the noise was. The dust cover on the harmonic balancer was out of round and rubbing on cover. Straightened it and took a dremel with a sanding wheel and cleaned the inside good

Do I need to drop oil pan to remove timing cover?

I think I have the same problem . I have engine in car. Can I remove timing cover and water Pump without dropping the oil pan?

I couldn't see any evidence of the pulley rubbing. I bet it is the oil slinger.

We'll more problems with car. Fired it up today and had a screaming sound coming from around the balancer. Can't see anything rubbing. Any ideas? It wasn't making any sounds before I pushed it in further.

Yes you was right. Thanks