yet another evo X erratic idle
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Joined: Mar 2012
Posts: 14
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From: Madison WI
Here is the order that I would check things... I'm no expert, though. So take this all as just things that I've done in the past with my DSM's and my Evo IX and X.
Boost leak check - You've already done this
Soapy water test on all IC piping - If you see bubbles, there is a leak.
Check all vacuum lines
Check MAS sensor
Check PCV - It's a 2008, so it shouldn't be bad. It's just a good idea to check it.
Check BOV for broken diaphragm/leaks
Check throttle body/clean throttle body - You've already done this.
Check Cat
If all else fails:
Check air filter and replace if needed
Install boost gauge and watch the readings
Check clutch master/slave cylinder and ensure the clutch is properly engaging.
Boost leak check - You've already done this
Soapy water test on all IC piping - If you see bubbles, there is a leak.
Check all vacuum lines
Check MAS sensor
Check PCV - It's a 2008, so it shouldn't be bad. It's just a good idea to check it.
Check BOV for broken diaphragm/leaks
Check throttle body/clean throttle body - You've already done this.
Check Cat
If all else fails:
Check air filter and replace if needed
Install boost gauge and watch the readings
Check clutch master/slave cylinder and ensure the clutch is properly engaging.
You are wasting your time, it's a problem with the stock map, the problem is that the computer switches idle tables and the car cannot keep up with it, resulting nj surging idle,
I've personally had this issue with a off the shelf Cobb map and modified it myself to fix this issue. Ask any evo x tuner.
http://www.evoxforums.com/forums/showthread.php?t=56314
I've personally had this issue with a off the shelf Cobb map and modified it myself to fix this issue. Ask any evo x tuner.
http://www.evoxforums.com/forums/showthread.php?t=56314
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josephcastelar
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