I used the Bentley Book to do it. I have never even messed with the little diagnostic thing on strut tower (driver's side). Worked like a charm. I plugged into terminal 2 and did what the book said (pushed the little button thing) and the injectors started cycling....after that, the IAC valve started cycling. Pretty cool. That was pretty cool.

Anyhoo...still wondering why the thing "limps" when you crank it up instead of roaring to life like the other 240s. I'll try the other diagnostics later...maybe the air conditioning ON relay ...or perhaps the throttle sensor??

Maybe it's just the way the '89 is supposed to start. I dunno. Anyway..it was cool to learn how the little diagnostic thingy works.
Cabbie2169