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tiny little spark at the plug "sometimes "
- I have made a mix connection so i can switch be twin the org. Bosch ecu =
- mixed connections are very hard to get right and usually cause a lot of problems.
- RPM, injection and the rest seams to be ok. Tried to adjust dwell timing
- what dwell values are you using ?
Coil specs
from a standard Ford Fiesta wasted spark (edis). Should work well.
Measured the coil:
- Pin 1-2 = 0,5 ohm (pin1 is for cyl 1-4)
- Pin 2-3 = 0,5 ohm (pin3 is for cyl 2-3)
- Pin1-3 = 1,0 ohm (this is the sum of 0.5 + 0.5 Ohm)
- secondary winding resistance= ... kOhm
Please note that according to above measurements pin2 is the common +supply of the coil. On pin2 you want a switched +12V connected through a 10A fuse.
I corrected the error in the above: pin1-3 does not directly control cyl 2-3 ! pin2-3 controls cyl2-3; Peter, please delete this note to confirm.
- does the "tiny spark happens on cyl1,4 or cyl2,3 ?
- did you check the HV wires ?
- try to make new connections to the coil. Make sure there is absolutely nothing else connected that should not be! (like alien ECU outputs).
- measure coil supply current in 10A or 20A DC current mode (and take note of RPM and dwell values).
- in any case, you need to document firmware version and config and link to it from the question !!!
I have triad to Messer the resistance of the secondary side of the coil from top of the plug to earth but no resistance
The dwell settings 14V is 1,5-3 ms also triad to connect the coil direct to 12v pin 1-2 and 2-3 still no spark so maybe the coil is damage
I have a question about Wbo2 calibration
Is not possible calibrate the Wbo2 to 20,9 . When I change to ff = 255 Hex (wbo2_calibration=FF) the results become afr 20,1 and it not possible to go any higher.
Does anyone know what to be the problem??
- it's definitely pump_pid misconfiguration, the nernst cannot reach 4.45V (or more exaclty pump- + 0.45V)
- wbo2_pump_pid_ki=01 is surely wrong (where is the 01 value from?) try 0x20.. 0x40 or even 0x80 if you decrease wbo2_pump_pid_ilimit to appr 40..80)
- btw, measure RCal (resistance between sensor pin2 and pin6)
- Thanks Marcell
wbo2_pump_pid_ki=01 changes to 64 Hex all clear now
Best Regards
Peter
wbo2_warmup_ramp=A0
wbo2_warmup_target=FF
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=60
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=C1
wbo2_nernstdc_target=8F
wbo2_pump_pw_zero=64
wbo2_calibration=FF#= 20,1 afr
wbo2_heater_pid_kp=46
wbo2_heater_pid_ki=10
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=A0
wbo2_pump_pid_kp=40
wbo2_pump_pid_ki=01
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=E0
wbo2_ri_confidence_scale=80