[Mrmerlin]

for your car the two most probable things that will cause this are the MAF going out of correctable spec,
and the LH computer failing ,
SO I would send the computer off for rebuild ,and do the same for the MAF .

Inspect the ignition coil wires ,
make sure they are not rubbing on any part of their run ,
and the ends are not corroded.


Clean all the connections at the battery and replace the ground strap