Oldsmobile/Buick: 90 Buick Regal - closed loop stalling, e mail address, tail pipes

Question
VIN # 2G4WD14WXJ1467916 ... PROM ID# 1621 ... 6 Cyl. Auto

My boyfriend's car is acting like it's running really rich. I borrowed my dad's Snap-On scanner tool noticed a few things.  In open loop I get some of the following info.
Block Learn-120 ... BLM Cell-0
Integrator-128 ... O2 Crosscounts-1 ... ExhOx-Rich
TPS-0.58v ... Fuel Pump-14.3v ... Spark Adv.-14
AirFlow-6 ... Map(v)-1.76 ... Coolant-127

In closed loop, the integrator # drops from 128 down to 76 and holds there. At the same time, the idle drops and it acts like it's running rich and fouling out the plugs. If I touch the throttle, the integrator count jumps back up to 128 and it runs good for a second, then runs rougher as the count drops back down to 76.  If I don't touch the throttle, it will die and won't restart until it completely cools down.  The O2 crosscount never changes. Here's info when the integrator hits 76.

Block Learn-100 ... BLM Cell-0
Integrator-76 ... O2 Crosscount-1 ... ExhOx-Rich
TPS-0.58v ... Fuel Pump-13.9 ... Spark Adv-20
AirFlow-4 ... Map (v)-2.80 ... Coolant-187

I'm very confused and my dad won't help me cuz he doesn't like my boyfriend. lol
Do you have any ideas of where I should go from here?
Thanks for your time. :)

Answer
Lacey,

It sounds stupid but did you give the car a full tune-up before hooking it up to the Snap-On Scanner ?

Idle adjustment to me might be the best place to start .

When going over the tune-up make sure the Plugs are Gapped properly , timing set and idle/throttle adjustments made according to the book . Then and only after this hook the car up to the scanner or even drive it around and see if that changes anything .

My knowledge of cars falls out of range after the 80's , which is funny since I'm only 22 =)

How can you tell its running rich ? Oil/Gas mist out of the tail pipes , smell  , "flooding" or "holding" back feeling when opening the car up ?

Send me another e-mail and I'll drop you my e-mail address so I can help you out some more , since I'm about to take a vacation .

Don't forget to rate my response to you .

Cheers,

Ed McKenna