Originally Posted by
D16PJM
if your alternator wasnt charging the car would not of run for a hour with a flat battery, id say starter or battery, have you tried putting a volt meter on the battery with it running to see what power is there, should be between 12 and 14 if i remember and then check when you turn it off.
ditto. but should be anything above 12.5 if your alternator is in good nick... also try the same test with all your electric stuff turned on (full beam, heater, heated screen, blower wipers etc) see how much the the voltage drops (you could have a shite wire from the starter motor to the alternator causing volt drop!)
having said all this from what you describe I am guessing starter is fooked!