90 mitsubishi mirage 1.5

[shesamechanic]

i'm working on a mirage, i changed the oxygen sensor, plugs and wires it still runs real rough what else could it be

[carbon mirage]

Originally Posted by shesamechanic

i'm working on a mirage, i changed the oxygen sensor, plugs and wires it still runs real rough what else could it be

Is the check engine light on? If not you could check your vacuum hoses.
Is it running rough in the morning? Or all the time? What about on a hill how does it act?It could be a number of things such as fuel filter, air filter,weak injector,sometimes even ECT (engine coolant temperture)sensors will do it.It could be telling the computer the engine is cold when
in fact it is hot,therefore the computer adds to much fuel which will make the car run rough.The computer relies heavily on these sensors. Why did you change the oxygen sensor?Was it showing bad?Or lean? Or rich? It's hard to say for sure what it really is but I hope this helps. If the light is on it can be your friend in this mystery.LOL Jacob