Charging System / Voltage Issues
Alright I'm dumbfounded.
I've been having "issues" with the charging system on my '95 GT. The symptoms are this: Upon cold startup my voltage is around 13.6-13.9V. As the car is driven (on the freeway for instance), the voltage slowly but steadily declines to around around 13.0V. Turning on accessories (A/C, etc..) makes it even worse (drops into the mid to high 12V range at cruise).
My first logical thought was the alternator and/or voltage regulator. Well, bought a new alternator and voltage regulator and it didn't fix the problem!!!!
Next thing I thought was maybe my MSD ignition is on the fritz (drawing too much power for some reason), so I disconnected it and ran with the stock ignition. No dice.
The car doesn't want to idle very well, and turning on the A/C at idle darn near kills the motor.
I believe the voltage at cruise should be around 14.0-14.5V. Obviously I'm way off from that.
It's a 130amp alternator (since the car is a '95), and there are no underdrive pullies on it.
Any ideas?? I'm completely at a loss.......
Thanks for any inputs.