I bought a mk2 fiesta which the owner started a
1.7 puma convertion on a few months ago but
lost intrest. it came with barrel ecu and both
wiring looms. I know it all came from a donor car which was
running when bought. so plugged it all in and when I turn the key
it just makes a noise of something turning on and them
a faint click. what could be the problem?