1500-2500 rpm hesitation...
 

When i am just driving normally, bout a mom in mini van pace, ill get anywhere between 1-2500 rpm and there is a hesitation, then after that its fine...it is really pissing me off and i have no idea what the problem is.

Primary injectors are not working properly?

You could try and clean them?

Any other suggestions?

Hey Bro:

I have a 88 convertible NA that has the EXACT same sounding problem. Whenever I am just crusiing down the road somewhere around 2500 rpm the car bucks about once or twice every minute, but continues running ok. Have you had any luck solving this? I am going to put new plugs, wires, filter, and all new cats in later this week. I will post if I have any luck.

just resolved the same thing in mine.
turns out the tps was out of adjustment. and the timing was out.

Splatter:

Any chance you could pst or link the method you used for adjusting the TPS and timing? I have that gactory manual and it says to use some wierd checker light for the TPS...