Missing issue.
 

1988 N/A 5speed.
New plugs, plug wires, air filter, and fuel filter.

When I am at cruising speed my car will miss? It only does it when I barely let off the gas or barely give it gas, and sometimes it does it when I am maintaining a speed.
But it never misses when I hammer on it or completely let off the gas...

It's usually pretty bad when I try to keep it around 40mph and not so bad the faster I get, but I can hammer on it all the way up to 70~80 and as soon as I let off just a little bit it will start missing which stops when I let off or hammer again.

Any ideas what this could be?
Thanks for the help!


On a side note, the clock in my car has never worked in the couple months that I've had it and it came on for about 5 minutes yesterday while driving then went right off... wtf?

Does anybody have any idea?

make sure the fuel injectors are working properly. also, check the tps and mass air flow. make sure you have a clean air filter.