Looking for help with a 740GLE non-turbo that fails to start intermittently (once every couple of weeks). Normally runs great, then at times just fails to start. Eventually if you leave it sit for a while itcatches. Engine cranks strong plus get spark, but no catch; not even a sputter. I have changed the coil, rotor, cap, plugs, & wires. The only other symptom that maybe related is the ignition key sometimes fails to turn the door buzzer off after removal. I changed the electrical portion of the ignition swition, although not the key mechanism itself. At a loss-any ideas? I am thinking that the key mechanisim is at fault and not making all the required connections reliably-like the fuel pump, etc. The switch is expensive and I am tired of guessing wrong. Thanks John

For whatever it's worth, had this one before. Owner had several keys on their keyring the weight and "swinging while driving" wore out the key mechanism + the key was slightly bent making contact intermitent.

steve m

Had a similar problem on my '89 Bertone Coupe. Turned out to be the fuel pump relay. Yank that sumbitch and resolder every single connection even if they look good, and then see if the problem reoccurs. That solved it for me! Good luck,

-Jon

Ditto the "radio suppression relay" which actually controls fuel injector current. On our '87 it was on the front of the coolant overflow tank.