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Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #5315
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Subject: "Idle hunting MSII" Previous topic | Next topic
740 turbo brickJul-05-11 07:46 PM
Member since Jun 09th 2008
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#5315, "Idle hunting MSII"




          

Just got my car back out from changing back to the stock intake manifold. First thing very apparent to me is a quick oscillation of RPM. About 750-1200 back and forth every second. I tried smoothing out my VE to help soften this and it didnt really help. Watching my gauges, while this is happening it doesnt make a difference if the IAC is in Closed loop or not. It can be at a constant 50 steps and it still oscillates rapidly. With this intake the car usually idles in the 46-42 step range. Even tried messing with the PID settings to get it to catch and slow down the RPMs, and although it was in CL, it still couldnt stop it. Normal Idle map is 55 kPa, it was going from 48-72 while it was hunting. Of course my AFR was all over while doing this, probably because of the over run fuel cut setting. Sound like a tuning issue or a vac leak somewhere?


95 Eclipse GS: 10.5:1, Crower 2's and MSII
186 WHP - 150 WTQ
14.697 @ 93.85 MPH......Gone, but not forgotten
99 420A Avenger: Given to my sister
99 GS OZ: Sold
03 Evo 8: Family Car with balls

  

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Idle hunting MSII [View all] , 740 turbo brick, Jul-05-11 07:46 PM
  RE: Idle hunting MSII, Slo2g, Jul-05-11 09:42 PM, #1
RE: Idle hunting MSII, 740 turbo brick, Jul-06-11 02:24 PM, #2
      RE: Idle hunting MSII, 740 turbo brick, Jul-09-11 06:45 PM, #3

Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #5315 Previous topic | Next topic
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