Hi,

Just when I think I've solved the bad idle problem in my 87, it developed a
new behavior. I swapped out the idle stabilizer with my wife's 90
cabriolet. The rough idle/rich mixture problem at start up seemed to go
away. But then after a day or so, it would idle at 2000 and stay there. I
shut off the key and quickly turn it back on and the idle would drop to
normal, but eventually get back to 2000.

So I out the original idle stabilizer back in the 87...but before doing
that I cleaned it with carb cleaner as suggested by someone on the list.
The 87 ran ok for a few minutes then after I drove it around the block a
couple of times, the idle went back to 2000.

I've noticed that the stabilizer constantly "hums". Is it supposed to shut
off after a while?? I disconnected the stabilizer and opened up the air
bleed screw on the throttle body, and it seems to idle ok now.

This is getting frustrating!!

I also cleaned the ground connections for the oxy sensor in hopes that
would help....

TIA

Ric