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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 ----------------------------------------------------------------- Inline 5-cylinder, sequential ignition with camsync Primary trigger: 60-2 w/ VR sensor. Secondary trigger: Single tooth w/ Hall sensor. The rising edge of the cam wheel hits the sensor after cylinder three fires and before cylinder one does. Firing order is 1-2-4-5-3. Ign. outputs will connect as follows (for 2+6 igbt configuration, + PNP transistor Ignition outputs * cyl 1, EC36/34 * cyl 2, EC36/35 * cyl 4, EC36/33 * cyl 5, EC36/36 * cyl 3, EC36/24 ----------------------------------------------------------------- Sensor: TPS is standard Volvo S70 , 3 pin. -Standart Vr sensor 2 pin -Hall sensor 3 pin -Bmw Mat sensor -2 Bosch Lamda -IAC 3-pin ----------------------------------------------------------------- Coil pin-out:S70 T5 Cop Pin---Designation 1 Trigger 2 Not Used 3 Ground 4 +12v ----------------------------------------------------------------- '''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 ---- '''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. ----------------------------------------------------------------- http://data.hu/get/6564404/v3.3_u003132-2013.05.21-00.44.37.vemslog http://data.hu/get/6564478/v3.3_u003132-A-2013.05.21-00.46.20korrekciofentgyujtas.vemscfg Hi Marcell, could you please take a look on my log file? On WOT runs from 1st to 4th everything is fine, but in 5th gear @ 3000 rpm the engine misfires => lambda goes lean (this is a consequence of misfire: unburnt oxygen in the exhaust), stutters. * Ignition is not strong enough. Ign current (peak current, or average current, RPM and dwell) should be measured. ** maybe longer dwell (possibly in function of MAP, see dwell_map in ignition settings) can fix it (or burn the ignition coil). ** check individual-power (if it's just 1 cyl or multiple cylinders) The other problem is the startup. Doesn't matter if the engine is hot or cold I have to crank the for a long time to start. What could be the problem? * it can be ... almost anything. If trigger is good (RPM shows up properly), than ... Either air, but more likely fuel or spark. * Needs experimenting and tuning (if you find values that result in improvement, save the log or config and take note of fuel pw).
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