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Low idle after ECU change

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Old May 18, 2014 | 05:29 PM
  #1  
thehig's Avatar
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Default Low idle after ECU change

Changed my ECU from stock to a chipped ECU P28. Everything was smooth but have super low idle. Was told to disconnect IAVC and adjust the idle screw. Want to make sure thats the best thing to do before I do it. Also if so can anyone post a pic of the idle screw. 98 Prelude
Thanks
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Old May 18, 2014 | 11:40 PM
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Default Re: Low idle after ECU change

There is obviously something wrong with the program of the chipped ecu, likely the idle rpms set point is too low or the base map is wrong. Don't go changing the idle adjusting screw if the stock ecu works fine with its current setting.
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Old May 20, 2014 | 06:05 AM
  #3  
thehig's Avatar
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Default Re: Low idle after ECU change

The stock one was a little low. Think I should just send it back to him and have the idle point set right ?
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Old May 20, 2014 | 06:38 AM
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Default Re: Low idle after ECU change

How low is low? If it still stays running, maybe it just needs a few ecu cycles to even out. Depending on what your idle is set at in the ecu, you may need to adjust your idle screw on the TB as well.
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Old May 20, 2014 | 09:21 AM
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take the iacv off and see if the metal outside filter is gunked up with carbon first
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