Thanks James,
I did replace the plugs(with Volvo plugs) about a month ago but did not
replace cap,rotor, or wires(which now that I think about it are worn
looking). I did clean the throttle body and the car does not idle rough at
all.
JB

Bob,
Interesting that you brought up the transmission fluid. It was an O'Reilly's
generic Dexron III.
The mechanic used a brand of cleaner,and conditioner that I can't remember.
He put the cleaner in before the flush. Flushed it with a machine(machine
was same brand as the cleaning agents) and then added a can of conditioner
after the flush. The old fluid was very dirty..
My mechanic owns an import shop. He is a Volvo certified mechanic with about
20 years experience. He uses mostly Volvo,Bosch and some other European
parts. The thing I do not understand is that he is of the opinion that all
motor oil and transmission fluid is the same. He believes that as long as
they meet certain requirements for a vehicle then one is as good as the
other. He did at one time use O'Reilly motor oil  with a Volvo filter for
oil changes but now he buys Pennzoil in bulk and at least there is a name
brand motor oil.
Is a generic tranny fluid as good as a Pennzoil or Valvoline tranny fluid? I
don't know. I try to use name brands but I do trust my mechanic. He does
very good repair work.

James B