Mercury Repair Questions? Ask a Mechanic for Answers ASAP
Hello! So were you driving when the battery light came on? What did you use to test the battery and is it an individual click or multiple clicks?
It sounds like a bad connection on the battery or one end of the cables, an individual click under the hood is usually the characteristic of a poor connection. Does it still have the factory cable ends at the battery on it?
Have you tried turning the engine over by hand with a long ratchet?
If it is clicking and you have a known good battery and there is no poor connection its possible the engine is seized. Try turning it by hand.
It could cause the battery light to illuminate, but it will not cause a no-crank issue
I'm not sure off the top of my head but I own a truck with a 5.0 liter, let me take a look and I'll have a good idea. Be back shortly
My truck has a 21MM damper bolt, keep in mind however it is possible yours may be different.