AHAMAYfrank
Ordered03, Owned04, Now07
I see this is an old thread but I have a similar charging issue on my 2007 2500. I searched Charging and ended up here.
The red charge system warning came on heading home from work one day as well as the air conditioning blowing warm, the radio turning off, and illuminating just about every light on the dash at one time or another. I got home but couldn't put the windows up until turned off the truck.
At the battery my system shows 12.4 volts off and slightly less running, at the battery and at the output terminal on the alternator. I didn't check at the alternator until I replaced it with a new one. I can't find anyone in the area that can bench check the alternator. (broken machines, missing cabling, unable to mount this style alternator).
If I check voltage at the small wire IN to the alternator I get battery voltage until the van starts and then I get 9 volts DC. After turning off the truck it remains at 9V until the high pitch tone stops and then it goes back up to battery voltage. The high pitch sound is the one I have been wondering about since 2007 when my van was new.
Does the fact that I appear to have no output at my new alternator imply that my Y chord is not the issue (but probably should be replaced any way?) Any insight is appreciated.
Frank S.
The red charge system warning came on heading home from work one day as well as the air conditioning blowing warm, the radio turning off, and illuminating just about every light on the dash at one time or another. I got home but couldn't put the windows up until turned off the truck.
At the battery my system shows 12.4 volts off and slightly less running, at the battery and at the output terminal on the alternator. I didn't check at the alternator until I replaced it with a new one. I can't find anyone in the area that can bench check the alternator. (broken machines, missing cabling, unable to mount this style alternator).
If I check voltage at the small wire IN to the alternator I get battery voltage until the van starts and then I get 9 volts DC. After turning off the truck it remains at 9V until the high pitch tone stops and then it goes back up to battery voltage. The high pitch sound is the one I have been wondering about since 2007 when my van was new.
Does the fact that I appear to have no output at my new alternator imply that my Y chord is not the issue (but probably should be replaced any way?) Any insight is appreciated.
Frank S.