Today I discovered the cause of the gsoline odor coming from the engine. There was a steady drip coming from the EHA valve that is mounted on the back of the fuel distributor. (little black two inch cube with electric connector)

Are EHA valves similar to water pumps in that they will leak through pre-drilled holes when the part fails? There are two holes in the EHA valve that appear to be leaking gas.
However there are two O Rings that act as gasgets for the valve. They might also be the cause of the leak. I'd hate to spend $150.00 for a part when all I need are two tiny O rings.

Does anyone have experience with EHA valves?

Smiles.

It's almost always the EHA itself, but the o-rings are cheap and their replacement is very simple, so why not replace them and find out?

Ok Steve thanks. By the way... the info you gave me about the location of the connector for the vacume pump was accurate. It was under the carpet between right front and rear seats. It was a crimp connector under the rug, and subfloor, inside the wiring chanel and then inside the wiring harness. I had to remove the front seat and cut the harness open to find it. There were about 5 wires crimped together(r/w)... the exposed tips all corroded to green powder. Grounds and switched grounds were also in poor shape.

Regarding the EHA valve... do you know if they are designed to leak like a failed water pump will do when it fails?

Smiles.