Hey guys, we have a 1990 Mustang 2.3L with some issues that have not been resolved. We have been working on it for months now and cannot completely solve the problems. I figured I would ask you guys because you all seem to know your stuff.
Problem: The mustang will not hold a battery charge. After replacing an array of parts, the problem still remains. We can hook a volt meter to the car and it shows that there is a power drain somewhere. After a quick drive the battery will only read 11.4 volts. We have a 1987 Thunderbird Turbo Coupe that we have borrowed the alternator from and the issue still remains. When driving the car, you can flip on the headlights and the volt gauge inside the car drops dramatically. To make sure the alternator is working correctly, we can disconnect the battery with the car running and the alternator keeps the car running even without the battery connected. This leads me to believe the alternator is fine.
New Parts:
Battery (2 times)
Battery cables
Starter
Diode Suppressor
We have had the alternator checked out by a show (removed from car) and it tests good. The tests comes back that the alternator is putting out 67 amps.
If anyone can help us out we would be very greatful!
Jared
Problem: The mustang will not hold a battery charge. After replacing an array of parts, the problem still remains. We can hook a volt meter to the car and it shows that there is a power drain somewhere. After a quick drive the battery will only read 11.4 volts. We have a 1987 Thunderbird Turbo Coupe that we have borrowed the alternator from and the issue still remains. When driving the car, you can flip on the headlights and the volt gauge inside the car drops dramatically. To make sure the alternator is working correctly, we can disconnect the battery with the car running and the alternator keeps the car running even without the battery connected. This leads me to believe the alternator is fine.
New Parts:
Battery (2 times)
Battery cables
Starter
Diode Suppressor
We have had the alternator checked out by a show (removed from car) and it tests good. The tests comes back that the alternator is putting out 67 amps.
If anyone can help us out we would be very greatful!
Jared