Instead of shorting the relay, you can short the large EEC connector behind the relay box. Its like a half hex-nut shape. If you have the angles up, you short the far left area with the far right. Anyhoo..
If its shorted on the relay, same difference. I know dirt can build up and possibly block the line, you can try releaving the fuel pressure. Also, you may very well have a leak, check for gas smell around the fuel pump area. I know the chicago rust eats right thru that whole unit. IMO its just the pump tho. Come on fix that shee so we know whats up lol!