If anyone has any kind of problem with hesitation around 2700 rpm, running rich, lack of power, having trouble getting hp out of higher rpm's or unstable idle (shaking) READ THIS:

My '92 SE was ticking me off with this hesitation problem. I decided to proceed and check ALL the wiring going to the ECU. Not an easy task.

Anyway, I had my car to the dealer about 3 times and they didn't find a thing. I finally checked the grounding (battery to chassis) and the meter read 34 ohms. This should be 0 ohms so I made a jumper out of 8ga amplifier wire and grounded it to the chasiss. I also repaced the braided wire towards the back of the engine grounding it to the firewall. I took the car for a spin and it fixed all the problems I have been having.

To check yours:

Aquire an Ohm meterPlace one probe on the battery’s negative terminal.Place the other probe to any other unpainted screw on the body of the car.Make sure resistance is under 2 ohms

Hope this helps! Worked for me and fixed all my problems.