Well I really hate posting this because it seems everyone has issues with the hesitation, lean burn condition, etc etc. So:

I have done:

Plugs
Wires
Cap
Rotor
Seafoam
Replaced Fluids
Fuel filter
The throttle cable does not need adjusting


What I have not done:

Checked ALL grounds
Clean EGR
Timing
Fuel pump
Injectors
Cleaned throttle body


So at part throttle my car drives like crap, hesitations and just plain flat. My 02 sensor looks fairly new and it is made by NTK, so I should be ok in that area...BUT, when I disconnect the O2 Sensor, the car drives perfect. So I am a bit puzzled. I do not have a check engine light when the sensor is connected. The sensor seriously looks new...

In any case... this is pretty frustrating, I bought the car for cheap, but the person before me did not take of it at all. I got the car at 10% running and I am at about 90% after all the work I have done.

Thanks.

 

Despite your detailed description, we need more information ....

My guesses?
- Fuel pump
- Fuel filter
- Injectors
- Throttle body & cable

Some of those are very cheap and easy to fix

 

Updated.

I am going to try and get some of the simple things done on the weekend. The car has power, it is just really odd down low at part throttle.

Did you mean new injectors or cleaning them.

 

It's not a race car and anything below 2500 rpm will be sluggish? Maybe your expecting too much out of the D15Z1 - just my thoughts..

 

Your kidding right. Yea I have a road race car that I use at vir. I am well aware of how the civic should be driving. I think I was pretty clear on the issues I am having as many have had the same issue in the past.

 

Is it a 5 wire O2 sensor?