[Erich]

Help! Can't find short

I checked and it appears the Cats are on correctly.

Here is what I know at the moment I attached this to the original thread before seeing this reference post:

After extensive checking I am having trouble locating the short or electrical problem that I am having.

At the present I am still blowing fuse #23 (fuel pump) but only when I start the car. If I have the key in position 2 the fuse doesn't blow. I believe is the problem may be with an overvoltage protection relay, more on this later. Here is part of what I know let me know if this gives any clues:

1. Key in off and I attempt to jumper 30 and 87 at the fuel pump
relay nothing at either relay;
2. Check with a multimeter 30 and 87 and there is nothing;
3. Turn the key to position two and I get just above 12 volts on
both relays at 30 and 87;
4. With the key still in position 2, 30 and 87 jumpered, I checked
voltage at the connector and I get about 3.4 V at 4,5 and 4,6 on
the connector;

The only time the fuse blows is when I start the car. I am not exactly sure of the direction of electricity flow but it appears to be ign coil - fuel pump relay - fuel pump - fuse, with the main (DME?)relay, DME, and some overvoltage protection relay(any one know where and what this is?) connected also.

I have just about given up here and may have to breakdown and go to the dealer to check this out....HELP PLEASE!!!