"The combi-relay is the most common failure item in the L-Jetronic system. To test, unclip the airflow meter from the air filter housing. Turn the key to the “on“ position, reach inside the airflow meter, and gently push the flap open. The fuel pump should click on, accompanied by the sound of fuel rushing through the fuel rail. If this does not happen, check the fuel pump fuse. If the fuse is intact, the culprit is most likely the combi-relay. On V6’s, the combi-relay is on the firewall, and the fuel pump fuse is in the fusebox. On Spiders, the fuse and relay are under the package shelf, behind the seats." Say thank you to Centerline.