I have a 2002 Lancer OZ rally and at about 73-74000 miles it started acting up and giving me a hard time now it barely runs.

Symptoms:
Sputtering
When i press on the gas sometimes it sputters and barely hits 3k rpm's and then it comes to life and shoots up with a roar.
Other times it wont go past 3k
Other times when the gas is pushed it will boggel out and turn off.

I had autozone run a CEL test because my light was on and on one time the error was "Cylendar 2 misfire" the second time was "Oxygen sensor inactive: Bay 1" These two errors prompted me to change the coil over packs and the oxygen sensors but my problem is still happening.

So far i have changed the:
fuel pump
fuel filter
spark plugs
spark plug wires
coil over packs
and the oxygen sensors

I was wondering if anyone out there knows what can cause this or if anyone has had the same problem.

Please help thanks

 

fuel delivery seems to be your issue.
Buy a can of SEAFOAM and dump it in your gas tank.

 

not trying to be a noob but what is seafoam and how will that work to fix my problemo

 

Seafoam works like a cleaner. It can be used in 3 or more ways.

The same can of Seafoam can clean:
- The intake manifold (Seafoam sucked in through a vaccum line)
- The crank case (Seafoam poured into the crankcase as if you were putting in some oil)
- The fuel system (poured into the gas tank)

Since you're problem doesn't seem to be oil related, I wouldn't use any in the crankcase. Seafoam will disolve anything that may be blocking your fuel system and what not. I'd also put some in the intake manifold.

I'll see if I can find the thread that talks about it...


Seafoam thread

 

ok well i looked it up on google and i found out how and what it is and does so thats a woot woot to you my friend thanks

 

My pleasure

I'd still like to know what other people think of the issue.
I'm sure it's fuel related but I'd like to read other possibilities.

 

I had a similar problem on my mirage... and it was the ignition coils that where bad.... replaced them and bought new spark plugs and it worked like a champ...

 

At first I would have said ignition, but he already replaced the coils and plugs

 

see i thought that at first also but i replaced the one on cylendar two becuase the code said that the cylander two was missfiring but after i changed it it still did it like this is what it is doin:

I turn on the car and when turning the key it takes a little while to start it tries but after a while it will turn on.

Then it will idle and sumtimes it idles normal

when i press on the gas it will either stutter in a sense as in wont feed gas or it will rev upto about 3000rpms then kind of die out and it will turn off

 

So you only replaced one coil pack? Try swapping them (one for the other) and see what happens! Should have gotten both, just for the hell of it...

 

2 other things, check the connection to your MAF and if need be take the MAF out and look to see that it isnt damaged. This sounds almost like the way mine acted the one time i forgot to hook the damn thing up Also go one by one and take your vacuum lines off and put them back on again nice and tight just to be sure this isnt vacuum related . . . ive dealt with those gremlins before.

 

If the maf was damaged, I'd expect a CEL.
No?

 

there is a CEL light the first time i checked it it said cylendar 2 misfire the second time i checked it it said oxygen sensor inactive: bay 1 but the CEL is on again so i got to go get it tested to see what it says

but here is me being nooby again.. what is MAF..?

Sorry im a computer guy more then a car guy im trying to get into cars though

 

Mass Air Flow sensor, that's right behind the factory air box or a possibly a filter for an sri... we don't know if your engine is in factory stock condition yet.

 

well air box as in like air filter cause i know that other then an air intake (k&n) as far as i know when i bought it it was stock... If that helps