Originally Posted by
martysmartie
The alternator is not working, it could well be electronically controlled in this case so this is where the problem could lie else I suspect a problem in the charging circuit, clearly it's not the alternator as you have replaced it with a known working unit. In the case of a Ford this is known as the "Smart Charge system". It should be charging higher than the open circuit voltage that does not neccessarily mean 14V so long as it has enough power to overcome the internal resistance of the battery, I.E 13V +.
Martin
i think it wont have the smart charge system as its basically a mazda with a ford badge stuck on
the alternator came from a ranger that was "running fine before the head went" so it is possible it also knackered , might drop my old unit off to be bench tested
AWOL- belt tension is fine but it does have a constant little squeak as though its under plenty of load , not a slipping squeal / squeak