Normally it will whine under load for a while and that will become a howl.
Finally you will hear a loud bang and that will be the end.
If it is a Posi then the friction plates are going bad.
in what
The sensor in the differential may be bad. Also the wires going to the sensor may have rubbed against a brake line causing them to short. The sensor in mounted on top of the differential and reads the vehicle speed.
how do i know the fuel pump is going bad in a 1998 ford expedition eddie bauer?
If you know it is bad, just unbolt the hold down and pull it out.
Because it wouldn't kick in so eg you would only have 3 wheel drive
Serious. If it is bad enough the vehicle will not move.
When your battery does not get charge.
You go to wiki.answers.com
you are going 2 feel really bad,sad,and bad it is tragic
You know the starter is going bad when you have a dragging starter.
It is important to know the signs of a bad car part. If an AC clutch bearing going bad, the biggest indication would be the trouble driving with the AC on in the car.