EEC Failure

This morning's trip from Indy to Milwaukee was interesting. The fuelers in Indy were dragging their feet again, so we were almost an hour late. On the takeoff roll, the autothrottles kicked off. Not a big deal so we continued and set the thottles manually. As we climbed out the autothrottles re-engaged, but then the left engine began surging intermittently along with pronounced yaw and a momentary thrust limiter indication, followed by the autothrottles disengaging (as they're supposed to). Then everything would go back to normal and I would re-engage the autothrottles. After a couple of times, we got out the checklist and tried deselecting the thrust limiter. The problem reoccurred, this time with a momentary EEC fault. The EEC (Electronic Engine Control) manages thrust by continuously computing the proper power setting. So, the next thing we did was to turn this system off for both engines (because you want them both being governed the same way), and now we were back in the 60's with hydromechanical vs electronic engine governing. We turned the thrust limiter system back on to provide some measure of protection against overspeed/overboost and proceeded to landing with manual throttles. The workload goes up in a modern jet when anything reverts to manual control, especially at 5:00 in the morning, but thankfully the weather was good and my landing was ok. The big question is, will maintenance be able to fix it for tonight's flight? Probably no parts in Milwaukee, so another manual throttles leg is in our future.