Vehicle: 1989 Supra, 7MGE, auto transmission
Problem: Squeaking noise only at idle when all the lights are on, increases with more electrical loads.
I checked voltage at the battery while the car is on and it sits right at 14.5v... is this overcharging?Is this normal? Could there be a correlation between the squeaking and overcharging?
My battery happened to go out on me(cheap 5 year old battery that would drop from 12.6v to 12 volts in a day, both in the car and on a bench). I also checked for parasitic draw, and there's nothing abnormal.
I put in a known good battery and it charges just fine. I also had a look at the belt and its free of cracks, fraying, glazing, oil.
Perhaps belt tension may be the problem?
Any help would be appreciated.
Problem: Squeaking noise only at idle when all the lights are on, increases with more electrical loads.
I checked voltage at the battery while the car is on and it sits right at 14.5v... is this overcharging?Is this normal? Could there be a correlation between the squeaking and overcharging?
My battery happened to go out on me(cheap 5 year old battery that would drop from 12.6v to 12 volts in a day, both in the car and on a bench). I also checked for parasitic draw, and there's nothing abnormal.
I put in a known good battery and it charges just fine. I also had a look at the belt and its free of cracks, fraying, glazing, oil.
Perhaps belt tension may be the problem?
Any help would be appreciated.
