Overcharging/CEL/gemlins

[JKreiss]

So i've finally got my new to me 93' back on the road and am working at getting some of the bugs out. I've put about 200 miles on her trying to break in the new suspension (which isn't hard on California roads) but I've had a repeat problem. I get the voltmeter bouncing mildly, lights flickering mildly and door buzzer waving in tune. I had the gauge all the way pegged at one point, then to 16-17 back to 14 and everywhere in between. I figured it was the gauge. The speedo and odometer quit for about 30 miles, then once i shut down, and restarted they began working again. Not sure if that's related.



So from my reading so far, my voltage regulator is in the PCM? I cleaned the the battery cables and started to run out of daylight. I'm going to clean the grounds well tomorrow. I checked the code and it's the 46 for over voltage or something similar. What should i be looking for as far a causes? It seems to stay bouncing between 14-15 volts but still throws a code. Any help would be great!

 

[BGlidewell]

voltage regulator is in the alternator

 

[ENafziger]

Hey Joe,

My only thought is that it is related to the Alcan springs you installed... because my truck has begun having many similar issues

--Eric

 

[cerberusiam]

voltage regulator is in the alternator

No, its in the SBEC (PCM) on these trucks,



You cleaned the battery cables now make sure that heavy wire that is molded into the hot cable is making contact inside the battery clamp. When that connnection gets bad the computer can't read charge correctly and over charges. Next you will start blowing light bulbs.



Look closely at the where the wires enter the clamp and make sure there is NO sign of corrosion evident. ANY indication is a good bet internally it is not making contact all the time.

 

[JKreiss]

My only thought is that it is related to the Alcan springs you installed... because my truck has begun having many similar issues

I hope that's not what's cuasing it:-laf

Look closely at the where the wires enter the clamp and make sure there is NO sign of corrosion evident. ANY indication is a good bet internally it is not making contact all the time.

I do have some minor corrosion on the expsosed wire, i'll try to clean it as best i can tonight. I already relaced the negative cable so i should probably look into replacing the positive as well. I'll start looking online for a good resource. Thank you for the help. I want to make sure the electrical is all straightened out before i do the custom dash.