Hey everyone,

I have a 1992 Olds 98 Regency with 298K on it that just won't die!  I love
this old car and it still rides like new.

However, the old girl has developed a strange habit at idle.

The idle speed continuously fluctuates while the car is stopped.  It revs
up and down, up and down, up and down, every 3-5 seconds.  Often it revs
down enough that the engine almost stalls out.

What is up with this?  This car since 90K miles has flashed the usual CES
light every now and then (especially when cold) but it is the EGR code
(nothing has ever gotten the ECM to forget about it) but there are no codes
other than that.

Anyone have a suggestion as to what is going on (and hopefully a cheap
suggestion) with this old gal?

Thanks in advance,
BigBob