Hi there,
- Firstly, I am not very good with computers, so bear with me!!**
I purchased a 2nd hand PnP VEMS v3.3 and have installed it on my Mk1 VW Golf 2.0 ABF 16v Turbo. The former owner has written a lot of info about the assembly here: http://www.vems.hu/wiki/index.php?page=MembersPage%2FBasilDaham%2FCordobaSX so this should fill most of you in. The car runs wastespark Bosch VW coil with the factory ignitors removed.
As you'll see in the link above, it uses a multitooth 60-2 trigger wheel, which is standard on this engine and located inside the engine on the crankshaft.
When we first installed the computer, the car ran ok, but with a weak spark. After a few starts, the crank signal started to become intermittent: it would appear and then disappear and the car would run and then fail to run without the signal. Eventually, the RPM signal disappeared entirely and "trigger errors" showed up on Megatune. After checking all the grounds (all fine) and everything else, we decided it must be a hardware problem, so sent the ECU back to Hungary where said it showed signs of damage and replaced the board.
To cut a long story short, I now have the ECU back and at first had no crank signal. I decided to pull the harness out of the car and redo all of the grounds to make entirely sure they were ok. After doing this and replacing the crank angle sensor (just to make extra sure) the RPM signal returned. However, the ECU had come back with the 1.0.73 firmware installed and this resulted in no spark. Not being entirely sure how to fix it with all the config. stuff (I'm not used to ECUs that are so DIY), I reloaded the 1.0.53 which the VEMS was previously running. I rebooted the ECU and then the car almost started.
Since this point, the RPM signal has become intermittent again:
- It jumps to 250rpm under cranking and back to 0rpm all the time: signal, no signal, signal, no signal. Sometimes cranking, it'll only register a signal once, the rest of the time nothing shows up on the RPM gauge and the trigger errors symbol appears again on the Megatune.
I have a new mainboard, new crank sensor, perfect grounds and a car that was running fine?!?!
I've now reloaded the 1.0.73Final, but the RPM reading is still intermittent...sometimes there, sometimes not...
_________________________________________________________________
TRIGGER SETTINGS/INFO:
Edge: Rising
Type: Multitooth
Filtering: Disabled
Advanced filtering: Disabled
Special N-1: Disabled
Fiat Stilo: Disabled
TDC after trigger: 60
Number of teeth on wheel: 58
Trigger tooth: 3
Next trigger tooth: 30
Crank min period: 3744 usec
Angular width of tooth: 2
Tooth relation Normal: 122 (irrelevant with multitooth advanced filter disabled)
Tooth relation Missing: 181 (irrelevant with multitooth advanced filter disabled)
Angular width of missing teeth: 6
Engine phase: 240
_________________________________________________________________
- I've checked the voltage coming out of the sensor whilst turning the engine over by hand - it seems perfect:
3.5V, pulled consistently down to 0.05V at each tooth.
_________________________________________________________________
CRANK SENSOR WIRING:
- EC36pin28 for 5v supply
- EC36pin27 for signal
- Sensor ground to EC36pin26
_________________________________________________________________
I AM CONVINCED THIS MUST BE A FIRMWARE/CONFIG PROBLEM, as the sensor is performing fine and the car HAS run before. It is worth pointing this out too: When I first got the car running upon installing the VEMS and harness, I opened Megatune using Megasquirt version of the program, and clicked 'ok' when it warned that table corruption may occur. The car has never run properly since this point in time.
I am not sure how to check my config.txt to make sure it coincides with my setup :-(
- At this stage, this is my saved config.txt for 1.0.73Final
- [Both tables can be checked against info here: http://www.vems.hu/wiki/index.php?page=MembersPage%2FBasilDaham%2FCordobaSX]
primep=0A
primep_temp_scaling=00
cwl=46
cwh=10
cranking_thres=03
awev=14
awev_temp_scaling=0A
awec=2A
warmup_clt_range[0]=00
warmup_clt_range[1]=10
warmup_clt_range[2]=24
warmup_clt_range[3]=38
warmup_clt_range[4]=50
warmup_clt_range[5]=64
warmup_clt_range[6]=78
warmup_clt_range[7]=8C
warmup_clt_range[8]=AA
warmup_clt_range[9]=C8
warmup_clt[0]=8C
warmup_clt[1]=8C
warmup_clt[2]=8C
warmup_clt[3]=82
warmup_clt[4]=7F
warmup_clt[5]=7B
warmup_clt[6]=77
warmup_clt[7]=72
warmup_clt[8]=6D
warmup_clt[9]=64
warmup_rpm_scale=CC
req_fuel=50
divider=01
alternate=13
injopen=00
battfac=13
kpafac=96
kpaoffs=80
injocfuel=2A
injrampup_battfac=FF
injpwm=FF
injpwmt=0A
als_launch_input=0F
rpmk[0]=0B
rpmk[1]=B8
tpsdot_kpadot_conf=00
tpsdotrate[0]=03
tpsdotrate[1]=0A
tpsdotrate[2]=14
tpsdotrate[3]=1E
tpsaq[0]=00
tpsaq[1]=0A
tpsaq[2]=14
tpsaq[3]=1E
als_cut_mintps=3B
tpsasync=06
acmult=8C
tpsacold=28
launch_enrich=33
launch_retard=60
overrun_fuelcut=64
overrun_fuelresume=64
rev_limit=4E
airden_ignore=00
config11=31
config12=40
config13=02
batt_cal=BC
fastidle=FC
als_max_cut=00
dbaro=0C
tps_low=00
tps_high=FF
fan_temp=5F
fan_hyst=05
fan_channel=FF
iac_step_seq=C9
iac_conf=58
iac_max_steps=FF
iac_tps_thres=1A
iac_cold_idle_temp=7E
iac_warm_idle_temp=C6
iac_cold_rpm=78
iac_warm_rpm=50
iac_cold_start_pos=B3
iac_warm_start_pos=4D
iac_afterstart_rpm=0A
iac_afterstart_duration=00
iac_speed=04
iac_kp=14
iac_ki=0A
iac_kd=0A
launch_rpm=64
iac_integral_limit_dec=32
iac_integral_limit_inc=32
iac_integral_deadband=14
iac_deadband=1E
als_cut_maxtps=80
iac_overclose_interval=80
iac_ref_pos[0]=FF
iac_ref_pos[1]=FF
iac_ref_pos[2]=F2
iac_ref_pos[3]=E6
iac_ref_pos[4]=D9
iac_ref_pos[5]=CC
iac_ref_pos[6]=B3
iac_ref_pos[7]=A6
iac_ref_pos[8]=99
iac_ref_pos[9]=8C
iac_sol_channel=70
iac_ign_slope=28
softrpm_range=4B
iac_ign_advance_limit=20
iac_ign_retard_limit=20
iac_ign_threshold=08
ego_conf=06
ego_lag=01
ego_coolant=B4
ego_maxtps=E6
ego_maxmap=00
ego_minrpm=06
ego_maxrpm=49
ego_warmup=3C
ego_lean_limit=00
ego_rich_limit=00
ego_pid_kp=28
als_enrich=1A
ego_delta=00
ego_target=19
ego_pid_window=FF
wbo2_warmup_ramp=A0
als_react_tps=99
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=B0
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=96
wbo2_nernstdc_target=85
wbo2_pump_pw_zero=68
wbo2_calibration=A8
wbo2_heater_pid_kp=46
wbo2_heater_pid_ki=10
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=80
wbo2_pump_pid_kp=15
wbo2_pump_pid_ki=4E
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=84
wbo2_ri_confidence_scale=80
knock_conf=00
knock_sampling_window=28
knock1_frequency=29
knock1_gain=00
knock1_integrator=0F
knock2_frequency=29
knock2_gain=00
knock2_integrator=0F
knock_threshold=FF
knock_noise_scale=FF
knock_max_retard=00
knock_default_retard=00
knock_retard_step=00
knock_retard_delay=00
knock_advance_step=00
knock_advance_delay=00
knock_minrpm=FF
knock_maxrpm=FF
ve_learn_coolant=D8
ve_learn_max_power=FF
ve_learn_rpm_scale=1E
ve_learn_kpa_scale=1E
ve_learn_ego_scale=43
ve_learn_min_weight=4D
ve_learn_speed=FF
ve_learn_limit=33
ve_learn_conf=00
lcd_c0=FF
lcd_delay=FF
lcd_backlight=FF
kpa_conf=22
ign_balance=50
als_retard_mintps=3B
als_retard_maxtps=80
lcd_default_view=00
primary_trigger=01
secondary_trigger=02
tooth_wheel=3A
trigger_tooth=03
another_trigger_tooth=1E
crank_minper=EA
tooth_wheel_twidth1=02
tooth_wheel_twidth2=06
cam_sync_r_edge_phase=01
cam_sync_f_edge_phase=02
reset_engphase_after=F0
ign_tdcdelay=78
ign_dwell14=1F
ign_dwell6=38
ign_crank_advance=14
ign_out=70
ignchmax=03
engine_off_delay=0F
pump_on_mintime=0B
fuelpump_channel=57
inj_stage2_rate=FF
inj_stage2_start_tps=FF
inj_stage2_start_map=00
als_deact_rpm=0A
als_deact_time=05
als_deact_egt=00
als_retard=F0
als_rev_limit=64
misc1out_minrpm=01
misc1out_maxrpm=FF
misc1out_mintps=FF
misc1out_maxtps=FF
misc1out_minmap=00
misc1out_maxmap=00
misc1out_channel=FF
misc2out_minrpm=FF
misc2out_maxrpm=FF
misc2out_mintps=FF
misc2out_maxtps=FF
misc2out_minmap=00
misc2out_maxmap=00
misc2out_channel=FF
act_wot_rpm=FF
act_wot_channel=FF
act_rpm_rpm=FF
act_rpm_channel=FF
egt1_cal=47
als_tks_channel=FF
boost_conf=00
boost_targetoffs=00
boost_minpressure=80
boost_pid_kp=20
boost_pid_ki=80
boost_pid_kd=01
boost_pid_ilimit=FF
boost_channel=FF
water_pump_temp=00
hybrid_rpm_a=00
hybrid_rpm_m=00
water_pump_hyst=00
water_pump_channel=FF
toothrel_normal=7A
toothrel_missing=B5
fuelcut_min_kpa=0A
fuelcut_max_kpa=7D
tach_channel=07
tach_div=10
shiftcut_conf=01
shiftcut_channel=FF
shiftcut_time=00
softrpm_rpm=4B
- This is my tables.txt with spark table H2 values changed to counter upgrade from 1.0.53:
j[0]=6580 6580 6580 6680 6780 6880 6980 6980 6B80 6980 6280 5B80
j[1]=6480 5D80 5B80 5F80 6580 6880 6980 6880 6C80 6D80 6780 5E80
j[2]=6380 5B80 5980 5E80 6380 6780 6980 6880 6D80 6D80 6980 6180
j[3]=6380 5980 5680 5980 6180 6480 6680 6680 6B80 6F80 6B80 6380
j[4]=6380 5980 5880 5880 5F80 6280 6580 6580 6A80 6F80 6D80 6480
j[5]=6480 5F80 5A80 5A80 5E80 6180 6380 6580 6A80 6F80 6E80 6780
j[6]=5F80 5F80 5C80 5B80 6080 6380 6480 6780 6B80 7180 7080 6980
j[7]=6580 6280 5C80 5C80 6080 6480 6880 6C80 7380 7680 7580 6C80
j[8]=6F80 6B80 6880 6380 6380 6780 6B80 6F80 7780 7A80 7980 7080
j[9]=7880 7680 6E80 6A80 6880 6B80 7080 7680 7C80 8080 8080 7880
j[A]=8580 8380 7F80 7B80 7A80 7D80 8180 8680 8B80 8E80 8C80 8480
j[B]=8E80 8D80 8B80 8880 8780 8A80 8D80 8E80 9380 9680 9580 8F80
l[0]=3D 36 2F 2F 2F 2F 2F 2F 2F 2F 2F 2F
l[1]=37 34 31 31 31 31 31 31 31 31 31 31
l[2]=37 36 31 31 31 31 31 31 31 31 31 31
l[3]=37 37 37 37 37 37 37 37 37 37 37 37
l[4]=37 37 43 47 4F 4F 4F 4F 4F 4F 4F 4F
l[5]=47 47 4F 55 58 58 58 58 58 58 58 58
l[6]=66 66 66 66 66 66 66 66 66 66 66 66
l[7]=6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B
l[8]=6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B
l[9]=6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B
l[A]=6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B
l[B]=6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B 6B
n[0]=D0 08 08 30 68 A0 BC BC BC C0 C0 C4
n[1]=40 08 08 34 68 98 BC BC BC C0 C0 C4
n[2]=40 08 08 38 70 94 BC BC BC C0 C0 C4
n[3]=40 14 14 40 78 94 A8 B0 B0 B8 B8 C0
n[4]=40 1C 1C 4C 7C 94 94 A0 9F A8 B0 B8
n[5]=2C 2B 2B 4C 78 8C 94 88 88 90 94 9C
n[6]=2C 38 38 48 70 74 78 70 70 78 7C 7C
n[7]=2C 38 38 44 68 6C 70 68 68 70 74 74
n[8]=2C 38 38 3B 54 58 5C 54 53 5C 60 64
n[9]=2C 30 30 34 48 48 4C 48 44 48 4C 54
n[A]=2C 30 30 2B 30 30 30 28 28 2C 30 30
n[B]=2C 1C 1C 18 10 10 0C 08 08 0C 10 10
k[0]=0A 0F 14 1C 22 28 2B 3C 4B 5F 78 96
r[0]=07 08 0C 11 18 1E 23 28 32 3C 46 52
h[0]=02 08 10 41 00 00 00 80
h[1]=00 00 00 00 00 00 00 00
h[2]=10 20 10 20 10 20 10 20
b[0]=14 18 1C 20 24 28 2C 30 80 80 80 80
t[0]=21 40 60 80 A0 C0 E0 FF
- I know how to edit, save and upload the tables, but have no idea how to read them and understand what they mean in relation to why my car won't run.