1986 galant wants to stall
 

my 1986 a dr, automatic trans. stalls ( for lack of decription)

after about driving about 3 minutes the car power just drops.
it is still running ( tach gauge) but no power at the peddle.
I can put it in nuteral and rev it up to 3000 rpm's and my power comes back. it only happens 3 -4 times a week but only after it has been turned off for 8 + hrs.

any hints[sm=dontgetit.gif]