The other day the alternater light on the dash started flickering so put another new alternater on my fiesta and suprise, suprise the things still not running right.
The car used to tick over at 1200rpm and when the light started flickering went down to about 600rpm fitted new alternater and is still the same has it damaged any of the electric components as now the car won't tick over properly the revs go up and down and the car is boosting up to 16psi on standard ecu ,what the hell is going on???

Chris..