Hi Im in the process of buying an 89 zed,went for a test drive all seemed fine but the abs light stays on constantly but does stop well and the boost gauge does not work at all,which the owner said ''is a comman problem'' ? i can feel it boosting but im coming from a starlet turbo to this and i wouldnt know if it was boosting properly anyway is this true that its a commen problem or should i just walk away? please help as i dont wanna waste my hard earned money!! many thanks.