AlexAhiao

My Subaru impreza 1995 has a new fuel pump an fuel pump relay. When I position key to on I can hear the fuel pump priming an the relay click....As i keep cranking the battery starts draining within 15 seconds of cranking!.. its a fully charged battery but it is a old battery.. took it to the auto electrician an he thinks its the E.C.U....Please help I really need It to get to work...Any ideas will be appreciated