What should an alternator charge at?

[mudski]

Before I go spastic trying to remove this last bolt that wont budge on the alternator. What should it be charging at? Currently at idle its 12.7v and when I rev it it drops to around 12.2v.

[Maxhead]

At idle, most charging systems should produce 13.8 to 14.3 volts

[mudski]

Thanks. I thought I was right. Just been under this thing every night for seven days now and its sending me loopy.

[Winnie]

You need to just relax and drive your car hey!

[mudski]

You need to just relax and drive your car hey!

Funny things is. It wont drive. Well, like it should.