I have a good idle, but the car has no power taking off from a stop. Regardless of throttle position, the engine will barely speed up under load and the car does move forward, but quite slowly. No missing, noises, etc., just no power.

One you get the car up to about 20-30 mph, it goes forward without a problem and seems to run just fine. You can drive it at freeway speeds without an issue. Slow down to a stop or below that 20-30 mph threshold and it acts like it has no power.

I'm satisfied that everything in the way of the MAF, ETA, plug wires, distributor caps/rotors are OK. The problem seems like there is no change in engine timing regardless of throttle position.

I'm getting a CEL all the time, yet the DAS shows random codes, such as knock sensors or ignition coils. I attribute these to occurrences at low speeds with the throttle at or near wide open. I can clear them without a problem and they'll come back again after I drive the car. Again, the codes are random and not at all repeatable. However, even if I clear them the CEL is on as soon as you restart the car. Strange.

So my question is, what exactly controls engine (spark) timing? I assume it's the EZL. I'm getting vacuum there, so I know that's right. I'm wondering if the camshaft or crankshaft sensor or pickup on the engine that is sending it information about the engine position that it might not be seeing.

I'm not in "limp home" mode that I can tell, as there is no limit on speed or RPM.

I'm about to have the car taken to a local shop for diagnosis, as I've pretty much hit the wall on this. Anything the collective wisdom of the group has to add would be deeply appreciated.