SR20DET running on 3 cylinders

[chituntang]

I had my car's harness repaired because the harness was a mess, and it get to a point where it would not start (crank but not running). Now, the harness came back, I put it back into the car, and the car started right up. But it is only running on 3 cylinders. I checked the compression (150). Checked for spark, and check for power to injector. Everything seemed fine. The only funny thing is when I check the hertz on the injectors, the range for 1,3,4 (the ones that are running) is 40-60, where number 2 is 70 -90. I am seeking suggestions before I am going any further.

Thanks
Jesse

P.S. It is a redtop sr on a S14