Ignition/charging system Granada

[bigdaz]

Ok when I start my car the battery light stays on and the alternator dose not charge till the engine is revved is this normal ? And with no load and idle I'm only getting 13.3v ?
And I'm only getting 5v at the plus side of the coil when the engines running I thought it should drop to 9v ? Are all these things related ? It's s 2.8 Granada

[Rich]

Charge system sounds fine. Alternator is just getting a little old and lazy but charge rate is fine. Nothing untoward there. Is the car running ok or are you having ignition issues?

[bortaf]

5V at the coil aint right but the light not goin out is normal for an old alt, some go out at idle some don't, in 3 alts over the years on my P100 2 went out straight away 1 didn't, all worked fine (untill they didn't lol).

[bigdaz]

It seams to be running ok, what would cause it to only get 5v ?

[bigdaz]

Ok I'll go to speck savers tomorrow I was checking the wrong side of the coil, when I checked the + side when running I got 7.6v which is about right sorry :-(