Ive got a 95 SE automatic and it learned a new trick last week.  At idle
in drive or reverse it will hicup every once in awhile feeling for a
second like it wants to stall but it doesnt.  In park it can sit there
at idle for hours and never hicupps.  When I drive it hicupps as well.
I run high octane fuel.  Ive replaced the spark plugs and its the same.
Replaced the MAF sensor and its the same.  Ran techron fuel injector
cleaner and its the same.  I am leaning toward a bad coil for one of the
cylinders or a faulty fuel pump.  I am getting no codes.  It is scary
because it feels like its going to leave me stranded sooner or later(I
kind of wish it would break so I would know the problem).  Any ideas.
The car has 195,000 miles.  I did notice that when I looked down the
holes where the spark plugs go that the tops of the cylinders?were kind
of crudy/brown...anything I can do for that?? Thanks in advance for the
help!! :)