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ECMlink Please Help With Idle

Posted by marcman804, Feb 19, 2020

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  1. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio
    Isn’t 1 active and 0 is open? He’s a 2g so there’s no idle switch but he can use tps for this.
     

    284  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    283  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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    1990TSIAWDTALON likes this.
  2. Lucky13

    Lucky13 Supporting Member

    109
    25
    Joined Nov 20, 2002
    Palm Beach Gard, Florida
    You should also log Closed Loop so you can make sure the car is in closed loop at idle.
     
  3. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,044
    2,381
    Joined Nov 14, 2013
    Independence, Kansas
    These are all just troubleshooting things that we are giving you so don't take it harsh, just trying to help.
     

    Street Build 4K  28

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    865  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    623  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 847  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
    ishnish likes this.
  4. ishnish

    ishnish Proven Member

    798
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    Joined Jun 26, 2011
    Modesto, California
    Yeah man, don't take it too harsh LOL I'm actually envious that you're getting so much help on an idle tuning discussion. Glad yet surprised the community is pitching in as much as they are because this topic gets covered a lot. We just want you to succeed!
     

    Street Build 1K  9

    1999 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM
    Loading...
  5. marcman804

    marcman804 Proven Member

    432
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    Joined Mar 5, 2005
    Cumberland, Virginia
    You guys are super helpful. Im going to get back to it after work this evening and post logs after I make the suggested changes and troubleshoot. Thanks again, you guys just dont know how helpful you have been, its greatly appreciated.
     
    Last edited: Feb 20, 2020

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
    1990TSIAWDTALON and ishnish like this.
  6. marcman804

    marcman804 Proven Member

    432
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    Joined Mar 5, 2005
    Cumberland, Virginia
    I finally got my idle situated and now Im attempting to tune for wot. And from what I've read, this should have been done first. I started doing a 3rd gear pull but it went very rich on my wideband (9.5afr), so I let out around 4500rpm. Also, the car felt tremendously under powered. What changes do you guys suggest I make? Thanks again.

    upload_2020-2-28_11-52-18.png
     

    Attached Files:

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  7. Vegas smith

    Vegas smith Proven Member

    2,995
    1,542
    Joined Dec 2, 2002
    Houston, Texas
    You need to completely redo your tps. Check the boxes of enable tps adjustment and enable idle switch operation. Set the tps and redo a log.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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    1990TSIAWDTALON, tk106 and marcman804 like this.
  8. marcman804

    marcman804 Proven Member

    432
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    Cumberland, Virginia
    Thanks for the response. Are those the only changes that I need to make before doing another pull?
     

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  9. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,044
    2,381
    Joined Nov 14, 2013
    Independence, Kansas
    I would lean her out globally until she idles at 14.7 and do as @Vegas smith suggested and set your TPS. It is really important that the ECU see the correct values in order for the car to operate correctly. Idle should be around .64-.65 volts, you are at .55 so it needs to be manually adjust to as close to the correct value as possible and then fine tuned with the TPS adjust feature.
     

    Street Build 4K  28

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    865  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    623  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 847  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
  10. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio
    You want to see 100% throttlepos when you floor it. It was covered in one of Jafro's videos.
     

    284  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    283  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
    Loading...
  11. marcman804

    marcman804 Proven Member

    432
    8
    Joined Mar 5, 2005
    Cumberland, Virginia
    Its weird because I had set the TPS to .63 and it would go to .65 occasionally. Im going to go back and try it again.
     

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  12. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio
    Mine is goofy too. It reads .59 but as soon as I start the car, it jumps to .61/.63.
     

    284  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    283  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
    Loading...
  13. marcman804

    marcman804 Proven Member

    432
    8
    Joined Mar 5, 2005
    Cumberland, Virginia
    Just did another pull. It was so much better with the global at -57.8 and I checked "Enable TPS Adjustment" and "Enable Idle Switch Operation". Any other suggestions from here?

    upload_2020-2-28_15-14-26.png
     

    Attached Files:

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  14. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio

    284  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    283  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
    Loading...
    rafaelvanhalen likes this.
  15. marcman804

    marcman804 Proven Member

    432
    8
    Joined Mar 5, 2005
    Cumberland, Virginia
    I adjusted the TPS again and got it to go 100% throttle and it was at .65 but somehow went to .67 after a few minutes. I let out around 5600 to 5800rpm because it was pretty rich according to the wideband gauge, aroud 9s.
     

    Attached Files:

    791  16

    1997 Mitsubishi Eclipse GST
    14.434 @ 103.560 · 2G DSM
    Loading...
  16. curt-s

    curt-s Proven Member

    795
    241
    Joined Dec 21, 2008
    Winterville, MB, Canada
    Usually that is due to heat. Causes electrical resistances to change (tps sensor) and metals to expand (throttle linkage, idle switch). Also if the throttle cable is very tight, slight shifts in engine orientation do not allow it to return exactly where it was during initial adjustment, causing a pull and slight opening.
    Try to adjust on the low side of .63, not high. Sometimes that helps.

    Further back abour your isc, keep in mind that it is not a feedback circuit. The ecu commands a value and its up to the isc to obey. Either it does, it cant due to issue, or it blows drivers in the ecu. If its not adjusting below 34 even if you back out the idle screw, something else is funky.

    I shoot for between 30 and 40 and try not to get hung up on exact values. That still provides plenty of adjustment room when additional load is placed on the system. I dont have a/c though so only heavier draw items like headlights or my tail lights generally cause adjustment.
     

    Street Build 2K  1

    1991 Eagle Talon TSi
    fwd · manual · 1G DSM
    Loading...
    marcman804 likes this.

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