I'm trying to nail down the source of my annoying engine stumble throughout the lower RPM range. I don't think it's fuel or sensor related, and I'm guessing its spark.

I've pulled the distributor, but I'm confused as to what is what. My Haynes manual isn't helping a whole lot here. It is an external coil model, and I have already replaced the cap and rotor.

I'm wondering what I should be testing/replacing now that I have the distributor out? There is a large black electronic component with two external connectors, I believe one goes to the coil and one to the ECM. Then there is a two wire connector that goes into the distributor body. What is this component? Ignition module? Where do these wires go into the distributor? The connector just fell apart while I removed it, and the wires are a mess.

Anything else I should be checking while I have it pulled?

Thanks

 

http://cgi.ebay.ca/RS03-DISTRIBUTOR-...item563a6ee8de

How about something like this? Seems like it would solve my problem, replacing all the individual parts like the module and pickup coil would cost more anyhow.