My 1990 740 2.3 injection stalls every two minutes or so.
Have replaced;
distributor and cap rotor all leads plugs
fuel pump relay
battery
flywheel sensor

It stumbles, the revs drop and the engine dies. I turn off the ignition and it starts pretty much instantly, with far less cranking than is needed to start it.
For this reason I am ruling out a fuel delivery problem, am I right?

What's this radio suppression relay? Where is it? I can't find one in my compartment anywhere. What else could be causing it?

It runs absolutely perfectly up until the stall, and perfectly until the next one and so on...

Any advice would be much appreciated.

Scott.