Hi I have a 04 2.0 sx jtd , the battery light came on and it seemed to loos power at the same time. Had the alternator checked and was naffed so Fitted new alternator but still power loss. It struggles to get over 65mph and doesn't pull through the gears like before
Please help

not too sure but maybe your sucdo is in limp mode reducing the engines power to help prevent damage has yours got a rev counter i think its meant to limit rpm as well
any mil light on

hope it helps but its a shot in the dark