Egr or Vaccum Lines? I need help!

[RobAnd34]

Hey guys what's going on? I have a quick question? My 1998 Eclipse GST with a 6 bolt was sitting since June. I have recently got the car running and everything was running okay. When I mean okay, I mean it started and was drivable but, my problem was when I would just be driving (normal) and would creep into gears and shift at like 3,000 rpms. I noticed it like feels jerky and at idle, the idle goes up and down and sometimes stalls out. I have been doing multiple tests on the car to figure out the problem like boost leak test, replaced everything spark related. I think the problems is either vacuum lines or my egr valve is stuck open maybe? Which is causing me to run lean? I have my car set at 14psi for winter drivability and have the stock ecu set up. It just seems as if it is getting to much air (it sounds kinda like a subi when driving or at idle) could use some insight thanks guys!

 

[92AWDHX40]

How do you know your running lean? Can you post a video of the car?

 

[RobAnd34]

Yeah, I probably can. I just got my afr gauge recently I just need to install it. Reason I think it is running lean is from taking it into my school and talking to the performance instructor and having him check it out. It was running rich before cause I originally was running AEM and had 680cc injectors. So I hooked up stock injectors and stock ecu. When I put the pedal to the floor at times it will reach full boost and actually run just fine but then when I go back to normal driving it sounds like as I described before.

 

[92AWDHX40]

Aem engine tuning, got a wideband?

 

[RobAnd34]

yes, I do its the AEM uego wideband just needs to be installed.