charm,

I agree with janglim, that you have to have the signal from the Hall sensor consistently to provide the proper voltage fluctuations to the primary side of the coil. The magnetic field energy that is created and stored in the coil on the primary side is transferred to the secondary side when the primary circuit is interrupted.

Have you cleaned the contacts to the coil (primary side)?

Clean the 25A fuse on the inner fender- it often looks fine but develops an oxide layer that can be an intermittent problem, especially in the rain.

If your contacts are clean and still has the same problem, I think I would get a coil from the PnP to try.

Also, Fuel pump relay - resolder or replace with new.

Just a few ideas...

Good Luck!

TomD
'86 240
'93 240