95gt alternator problem

[ttocs]

ok looking at that diagram it does look easy. Trace the wires back down as far as you can and make sure that there are no loose connections. Also see if you can find those fusable links as they might be failing once the motor heats up.

One other thought, there is a voltage regulator in the dash of the sn's that goes bad and can cause some funny problems.... Notice any heat from the instrument cluster.

 

[acomaelkhunter]

i thought of the fusable links. when the alt wasnt charging. checked with ohm and found connectivity. Also when alt wasnt charging the volts read the same at the battery and "hot" wire behind alt. when the alt is charging he volts read the same as well...im thinking it has something to do with the signal that goes to the regulator on the alt.

 

[acomaelkhunter]

alt worked all day yesterday...started up this morning, no charge again. loose wires or computer?

 

[ttocs]

could be any or all. To test the wires all you really do is get a little rough with them. Any connection you make should be able to take at the very least a small tug on them but honestly should be able to survive a fairly good pull on the wire. If it comes loose then there was something wrong to begin with and need to be redone. Trace the wires down across the motor and make sure they have not shorted out somewhere if the factory loom/tape were removed.

 

[acomaelkhunter]

thinking of doing this wiring test

 

[CC'S95GT]

look at the battery connections very well and make sure all are tight and corrosion free.

 

[acomaelkhunter]

i put on new wires for positive/fuse block and negative/engine ground. post are clean

 

[CC'S95GT]

damit!

 

[acomaelkhunter]

running like a champ now!!!! rolling the dice

 

[ttocs]

what did you do?

 

[acomaelkhunter]

randomly comes on??? last night no charging, this a.m. no charging....all afternoon yesterday and today running totally awesome!!!! WTF???

 

[ttocs]

have you traced the little wires yet and checked for shorts?

 

[acomaelkhunter]

the yellow wire to the fuse box and replaced the white stator wire and plug. not the green wire cause i figure if my gauge is working that wire is working...

 

[acomaelkhunter]

i would like to find a way to isolate the bad circuit with out having to pull wires? if thats possible.

 

[acomaelkhunter]

okay...i have attached a jump wire to the the green wire that goes to the gauge and interior fuse box with is explained in the above "65" 3 wire conversion diagram as the exciter wire...and the alt meter and the alt gauge jumped to 13.5 v.....trouble shooting is now focused on tracing the green wire, replaced the #18 20 amp fuse for the hell of it. no change...

 

[ttocs]

just for kicks take a pass though and spend the 2 mins it takes to check EVERY fuse in the car both under the dash and under the hood.

 

[acomaelkhunter]

i checked the fuses and they all checked out good

 

[ttocs]

by "all" you mean every fuse in the panel or just the ones the manual said had to do with the alt?

 

[acomaelkhunter]

all the fuses under teh hood big and small and the ones under the dash

 

[acomaelkhunter]

going to check the ignitin switch next!!!