82cetuner

iTrader: (9)

so i had a bad alternator that was fluxuating the voltage and sometimes charging and sometimes not and also making horrible grinding noises when it actually was charging so I know it was bad.

well I went with a 145 truck alternator and installed it, but now I get NO fluxation in volts and it sits at 12 and I started the car and ran it for 10 minutes and it didnt have enouph juice to start back. now the other alternator actually ran for 4 days and alot of driving.

I forgot to unplug the battery and did accidently spark the wires on the back of the alternator I was taking out, I figured I blew a fuse but I checked them all and cant find any bad ones. Is there a fuse in the thick line going from the battery to the anternator? I didnt see one any help on this would be appreciated.


I have heard that the exciter wire can be a culprit but I didnt see anything wrong with it yet just want to cover all the bases

JOHNNY59

iTrader: (398)

good chance you fried the voltage regulator!

82cetuner

iTrader: (9)

isnt the volage regulator in the alternator? I sparked it on the old alternator as I was taking it off, I had the battery undone to put the new one on.

82cetuner

iTrader: (9)

now my altenator has 2 wires comming out of the back of the screw, one from the battery, and the other comes off the alternator into a fuse that then runs behind the heat shield for the fuel lines I am not sure if that is for the raxtronix hotwire kit that was installed or not. I think between this and the TPS issue I have i may just need to put it in the shop and start having them hunt down these eletrical problems, they are a little above my expertise. I am more mechanical

82cetuner

iTrader: (9)

i doubt its possible this thing could have a differnt pinout? as in the exciter wire is on a different pin than the stock alternator

JakeFusion

iTrader: (7)

That's a possibility. When guys do the truck alternator do they make any changes for the exciter?

sjsingle1

iTrader: (1)

besides using a longer wire.......no

82cetuner

iTrader: (9)

yeah i didnt have to extend the wire just plugged in like stock, I am going to take the alternator and get it tested just to make sure I didnt get a dud if it tests fine its gotta be the exiter

82cetuner

iTrader: (9)

also if I am going to replace this harness how far should I go up with the wire, and can I use regular connectors or do I need to sauter it

82cetuner

iTrader: (9)

well I found my REAL problem, my harmonic balencer sperated install so the outside was not spinning, this explains the grinding noise I heard before and also the sparks people said they saw come out from under my car several times and why i was losing charge under acceloration, Hopefully I didnt mess up the exciter wire and a new pulley will fix all, got a new one comming

JakeFusion

iTrader: (7)

Damn man lol.

82cetuner

iTrader: (9)

yeah, the balencer completly seperated it free spins, i am sure when it was pulled off to replace the cam it got damaged, it was pulled from the outside