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

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

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

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

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

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:
Volvo S70 T5 Turbo Motronic 4.4 Ecu 19T 21psi cca 340Le Engine: B5244T LPT 9:0:1 2445 ccm 5 cyl Na camst Rs500 intercooler S60R Fuel injectors 42lb Walbro 255 Lph pump TD04HL-19T Turbo 3" exhaust Msd ignition(distributor) ----------------------------------------------------------------- New Project: 1998 Volvo S70 B5244T + vems V3 Engine: B5244T LPT 9:0:1 2445 ccm 5 cyl Na camst Rs500 intercooler S60R Fuel injectors 42lb Walbro 255 Lph pump TD04HL-19T Turbo 3" exhaust Volvo T5 COP's Bosch 0221604001 Stock 60-2 flywheel, VR sensor Stock CAM HALL sensor ---- '''Ignition outputs''' * cyl 1, EC36/35 * cyl 2, EC36/33 * cyl 4, EC36/36 is suspicious looking at the individual power * cyl 5, EC36/24 * cyl 3, EC36/34 Sparkplug is sooty, not as clean as other sparkplugs... Cylinder 3 is sooty in ec36/34 note: dwell is 2.3 msec, does not grow with MAP (dwellmap=0) dwellmap is 0 because we don't see any change in ignition power with higher dwell than 2.0 msec ---- '''ign TDC-delay (primary trigger settings) is too low !''' * ign-tdcdelay = 20 is wrong.... Correction hint: 144+20=164 crankdeg = 15*6 + 74 * first trigger tooth should be 15 * "TDC after the trigger": ign tdcdelay = 74 crankdeg * of course, rotate ignoutputs by 1 to match the desired spark position ** verify by strobe * Strobe * cyl 1, EC36/36 --> 0 deg * cyl 2, EC36/35 --> 670 deg * cyl 4, EC36/33 --> 140 deg * cyl 5, EC36/34 --> 240 deg * cyl 3, EC36/24 --> 600 deg ---- '''Validation shows possible problem''' * sectrig HALL-dirac filter: preferrably disable it ! * iac ignadv change should be lower (+2, -6 crankdeg or similar; even +1 -3 or crankdeg is more than enough is IAC air-valve is set up properly, +0 -0 should be good too) With hall dirac filter the problem shows less times ---- '''Benchtest''' We applied some changes to the config, because "TDC after trigger" = 20 crankdeg is not a good setting (see above ... Since we changed 144 crankdegrees, you might need to rotate the ignoutput sequence by 1 event, strobing will show it). After that, we benchtested the config. We '''benchtested the ~160 kPa and 3000 .. 7000 RPM range most extensively where your cylinder seems to misfire'''. The ignition and injection outputs fired properly. Test config: http://www.vems.hu/files/VolvoS/tested-v3.3_u004521-A-2013.05.06-12.50.36.vemscfg As discussed on phone, "swapping"-game is needed to find out if * injector, valve or cylinder * sparkplug * sparkplug-wire * transformer (active COP that somehow needs very strong driving) * driver for transformer (AFAIK PNP drives the active COP, and PNP transistor is driven from IGBT in your setup). The config might need to be adjusted (eg. if 2 outputs are swapped). ---- Log: http://data.hu/get/6496900/v3.3_u003132-2013.05.01-12.33.07.vemslog The car is running normaly but when the boost is 0.5 bar and higher the car is missfireing because the weak spark. * One cylinder is misfiring, seen on the individual power gauge (hotkey ALT-5), we suspect that the cylinder / ignition coil connected to ouput 3, ec36 pin 36 is your problem //Emil New log: http://data.hu/get/6502250/v3.3_u003132-2013.05.03-16.34.38.vemslog I think the primary trigger setting and h0 is incorrect * you mean tdc-delay ?? with the current config when the tdc delay would be -10 degree then the sign would be in place on the crankshaft. Can you count the correct setting for this config?
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.