Definitely something to do with the regulator. Lucky it didn't fry the ECM!

The regulator is inside the alt so don't know if you can get a regulator by itself and install it. You might be better off getting a rebuilt alt.

G'luck........ed


'90 Troop 3.4 LS
'89 Troop RS (Has Valve Issues, needs Counseling)
HI, I'm Ed and I'm a Trooper-holic!
Keep On Troopin'......