Hello

Just wanted to start off by letting you know that this is my first post on evolutionm and sorry for it being a long one. This forum has been a great deal of help to me and I would like to thank everyone.

I currently own a 2013 Lancer Ralliart with 81000 km. Only mods done to the car are Cobb access-port running stage 2 91 octane and Cobb 3 port boost solenoid. Over the last month I have noticed a issue with the way my car has been running. Only warning the car has given me was a P0068 MAP/MAF - Throttle Position Correlation and the car entered limp mode. I uninstalled my access port and drop the car off at the dealer for the day. The dealer called me back and told me they cleared the code and found a very slow leak in the differential seals. They then told me they could not diagnose the engine due to some software installed into the ecu which I'm guessing they were talking about the access port. I told them it was removed but they said it wasn't. I drove the car off the lot and the engine light came back on. I took matters into my own hands and replaced spark plugs, air filter, cleaned the MAF and throttle body and check for vacuum leaks . I reset the car by disconnecting the battery and then followed a re-learn procedure by letting the car idle for 15 minutes, let it cool down and then took it for a 10 minute drive . Its been 15 days and no engine light but the car is still not driving right. I'm getting some light sputtering on light and heavy throttle and notice my rpm slightly bounces. In automatic mode when the car shifts it feels alittle rough and also shifts from 4th to 5th to 6th pretty quickly even if I'm only driving 50 kph when I believe it should be staying in 4th or 5th for the speed I'm driving at. I've included a short log file in the post where i first do a almost wot pull and then drive normal for 5 minutes. Anyone that could help me figure this problem, I would greatly appreciate it. Thanks

 

I 5 minute log is a little overkill I believe, We ideally would wanna see a pull, with the car sputtering

I don't believe all the ignition and timing tables are pertinent to your case as well.

Did you uninstall the access port when you brought the car in?
If so that is why the dealer couldn't touch it.
You can do so and unplug one of the ports of the 3 port, but chances are they are going to see the 3 port and realize what your up to.

 

Thanks for the reply Dwilson, sorry for the the overkill log, i was just try to give you guys as much info as possible. Could you please give me a list of the tables you would like to see only and i will get out tonight after work and give the car a pull. I want to also let you know i was driving to work this morning on the highway doing 100 kph and i let off the gas and was getting a lot of vibration and i got a knock sum of 13 but i wasn't logging at the time. When i went to the dealer the access port was uninstalled and they told me something was installed in the computer and they wanted it removed before the could continue.

 

There is a vacuum hose that seems to always come off and causes rpm fluctuations and such. Its on the front of the engine on the left side. Put it back on and secure it with a zip tie.

 

This sounds like a vacuum leak but I don't think is the hose that jkennedy293 says. The behavior of the car with that hose off is different to what the OP is describing.

What mods you have?
Please check that all your hose are properly secured. I never check up the MAF of this car if is accessible to clean up with a cotton swab filled with alcohol. But check that also it might be dirty.

Check that the maf is properly seated. All clamps are secured.

Possible symptoms for a P0068 are
- Faulty Mass Air Flow (MAF) sensor
- Large vacuum leak
- Leaking air duct system
- Mass Air Flow (MAF) poor electrcial connection
- Manifold Absolute Pressure (MAP) poor electrcial connection
- Faulty Manifold Absolute Pressure (MAP) sensor
- TP sensor not seated properly
- Faulty Throttle Position (TP) sensor

Read more: http://www.autocodes.com/p0068.html#ixzz46YWFhMRp

 

I am having the same issue with mine and its completely stock. Its not throwing any codes at all. I've had it to 2 different dealerships and a performance shop and no one can figure out whats going on with it.

I changed plugs, injectors, and coils but nothing worked. It started about a year ago but I hardly drive it so I just gave up.

 

Are your vacuum lines on the bov on good ? Are you using a stock BOV?

 

sorry for the late reply guys, I have checked vacuum lines and nothing was popped off or loose. I re-tightened all clamps anyways and she seems to be running a little better but there is still the odd sputter here and there. Is it possible that i could be confusing myself into thinking Im getting sputter when it could be something like tie rods, loose bushing or drive shaft? I got some vibration when i let off the throttle and then im turning and accelerating. BOV is stock and hoses are tight.

 

Where you able to fix the issue ? I’m currently in the same problem as you with my 2013 lancer ralliart also throwing code P0068