# ###   
 ##   #  
 #       
 #       
 #       
         

   ____ 
  / ___|
 | |    
 | |___ 
  \____|
        

         
   ##    
         
  ###    
   ##    
   ##    
  ####   
         

         
         
 ##  ##  
 ##  ##  
 ######  
 ######  
 ##  ##  
         

         
         
 #####   
 ##  ##  
 ##  ##  
 ##  ##  
 ##  ##  
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
|| [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD Start] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FQuestions Questions ] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FInjector Injector] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FIgnition Ignition] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FTrigger Trigger] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FDisplay Display] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FWbo Wbo] ||[http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FConfig Config] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FTables Tables ] || [http://www.vems.hu/wiki/index.php?page=MembersPage%2FRallyeNLD%2FIdle Idle] || ---- '''Problem with idle control:'''firmware 1.1.12 * 4-wire stepper motor, Magneti Marelli * 2-coils, A-D and B-C * stepper motor responds to mdi command, mdiCC results in nice 1000 RPM idle * iac_step_sec seams correct, because the iac closes with increased throttle, so its turning in the right direction. * there are no leaks in the air supply \\ Symptom. When the ignition is turned on, the stepper will go to its start position, but when the engine is started it will go to a midway position and controls the idle speed from there on. This results in an engine idle speed of approx. 2300 RPM. '''Q''' why is the engine idle speed stuck on 2300 RPM? You probably want to publish a log, with some notes, to make investigation feasible. At the absolute minimum, you should take note of what iac position the ECU thinks the iac is at '''Relevant config''' iac_step_seq=2D iac_conf=5E iac_max_steps=E8 '''MAYBE THIS IS TOO HIGH and IAC ENDS UP AT DIFFERENT position than what the ECU thinks?''' iac_tps_thres=05 iac_cold_idle_temp=A0 iac_warm_idle_temp=CF iac_cold_rpm=72 iac_warm_rpm=4F iac_cold_start_pos=EE iac_warm_start_pos=6F iac_afterstart_rpm=00 iac_afterstart_duration=1E iac_speed=07 iac_kp=21 iac_ki=0B iac_kd=2C launch_rpm=28 iac_integral_limit_dec=18 iac_integral_limit_inc=37 '''I would use 3 times lower limit_inc than limit_dec, and tune the reference position higher: so the integral stays mostly negative, taking away iac.position to give better transient behaviour''' iac_integral_deadband=0A iac_deadband=05 als_cut_maxtps=00 iac_overclose_interval=FF iac_ref_pos[0]=6B iac_ref_pos[1]=66 iac_ref_pos[2]=61 iac_ref_pos[3]=5E iac_ref_pos[4]=53 iac_ref_pos[5]=50 iac_ref_pos[6]=47 iac_ref_pos[7]=40 iac_ref_pos[8]=3E iac_ref_pos[9]=26 iac_sol_channel=FF iac_ign_slope=10 softrpm_range=03 iac_ign_advance_limit=10 iac_ign_retard_limit=18 iac_ign_threshold=08
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.