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Ok so i have a 96 civic ex. It has been falling on its and bogging out lately. It seems to be worse when its cold. Also when i push the gas pedal futher it seems to fall on it face more. The lighter the throttle the better it seems to run. Car will set a CEL it is running to lean. I have replaced the plugs and wires and the upstream o2 sensor.

Any input would really help this thing is driving me nuts!!!

 
Rep Power: 217

Have you checked for exhaust leaks, tested the MAP sensor? Bad tank of gas?

 
Rep Power: 0

I have ran Several tanks of gas through it.. One had sea foam, and one had lucas fuel treatment. I have not check the map sensor yet. But i just had the exhaust checked out and there was a section that had some bad rust but i had that replaced. But the problem is still there.

What i find wierd is that it runs alot better when it warms up ( still deosnt run perfect but alot better)

Thanks