Here are my current problems, which need solving.
Really big problem with injectors
One morning, out of the blue, started this problem.
Injectors are fully open almost always when fuel pump is energized (injectors get power from fp-relay).
At the moment, nothing happens when i turn on ignition, but when try to start, injectors 1, 2 and 4 fire at full capacity. They also keep firing until fuel pump stops. Naturally the engine floods immediately.
First when this happened, injector 1 fired also when ignition was turned on. Injectors 2 and 4 did this sometimes, but not everytime.
I updated firmware 1.1.18 -> 1.1.27 just to try something, no change. I don't know for sure (haven't tested many times), but since that injectors don't open at all when ignition is turned. When starting, they behave exactly as before.
Prime pulse was and still is disabled. Config and tables are on main page.
Any ideas?
You have to change the FET drivers i think. Also you must check if the flyback is connected good!-Fero
- If this is the case, how is this possible? How could FET driver fry (FET itself i could understand)? Could i improve injector control and reliability by purchasing power-flyback (doesn't effect driver though)? This is the kind of problem, that one can't afford to happen during a drive. Flushing cylinders with fuel isn't a good thing. - You have to check the FETs. I had the same problem for a long time ago, when the flyback connection was not good in the car. Chek that the FETs are working or not!-Fero
- So you did mean FET itself. Yesterday i measured the FETs, and it seems that injector 1, 2 and 4 FETs are indeed fried. So i will check flyback connections if it's the reason for this failure.
The FETs were fried, and now replaced with new ones.
I checked all flyback wiring and TS-diode. Can't find anything wrong.
Any other ideas?
I think ecu has dd-flyback, 30V TS-diode is installed externally, PWM is disabled, Hi-Z injectors. Configuration has worked perfectly for a month.
Trigger errors around 5500
For some reason, when i try to rev above 5000, i get trigger errors, and spark disappears until revs go below 2000.
Sounds just like auditrigger problem, but how could this be.
I will try to change my current Hall-sensor to VR, when i get the required hardware-mods done. Still, this shouldn't be an issue.
previous measurements
Megatune lights up a light if trigger "wheel-errors" count up to a certain number (10 or 16 or similar: might light up if engine restarted several times without ECU reboot => that is normal).
On some page was told that mlp01 takes me to the page with errors and counters, but theres just bunch of hex. W.. is the "wheel-error counter". More on [InputTrigger/TriggerLog]
Need help to translate this log-file to understandable form, anyone?
[TeroK Scirocco triggerlog 14-04-2007]
Taken with terminal program (apparently brayterm). [analyzed file zip].
perl bin/binary.pl <start_14-04-2007.bin >start_14-04-2007.txt
Looks like a 60-2 connected with good polarity. Segments like this (left side) look good (missing tooth is 3 times longer than normal tooth, actually surprisingly precisely):\n
1078 837 1 1079 17667 1.04 1080 849 1.01 1081 20746 1.17 1082 2561 3.01 MISSINGTOOTH 58 1083 260 0.01 1084 872 0.34 1085 26627 102.41 MISSINGTOOTH 11 1086 861 0.98 1087 23556 0.88 1088 898 1.04 1089 33283 1.41 1090 899 1 1091 33540 1 1092 947 1.05 1093 45828 1.36 1094 957 1.01 1095 48388 1.05 1096 1013 1.05 1097 62724 1.29 1098 1050 1.03 1099 6660 0.1 1100 1133 1.07 1101 27909 4.19 MISSINGTOOTH 8 1102 1195 1.05 1103 43781 1.56 MISSINGTOOTH 1 1104 1290 1.07 1105 2565 0.05 1106 1347 1.04 1107 17157 6.68 MISSINGTOOTH 2 1108 1374 1.02 1109 24070 1.4 1110 1312 0.95 1111 8196 0.34 1112 1239 0.94
Your slowest tooth in above run is 1374 * 4 usec long, at position 1108,
(1108 1374), that is 13 tooth after tooth0 (the first tooth after missing tooth at position 1082 (1108-1082)/2 =13). If we put trigger tooth to 03, we have appr 10 more teeth (60 crankdeg) for ign_tdcdelay (but maybe 02 is better in reality, your timing light will help):
Approximate:
- ign_tdcdelay=78 (120, that is 60 crankdeg)
- trigger_tooth=03
- another_trigger_tooth=1E (decimal 30)
So, what are those other "missingtooth" markings? Should there be just "missingtooth 58" markings, and nothing more? Does this mean there are some errors?
Incorrect Wbo2 -readings or other misconf
It's impossible to adjust idle AFR to near 14.7, car stalls much before that. I cannot figure out how this could be possible.
Before VEMS (no HW mods to engine or ancillaries) this was no problem.
previous measurements
First wbo sensor i got, works in mysterious ways. After i got the factory settings for controller calibration, namely:
- wbo2_pump_pw_zero=0x66 (decimal 102)
- wbo2_nernstdc_target=0x88 (decimal 136)
I double checked the voltages according to PhatBob's manual. Everything were ok. When i started the free-air calibration, O2-reading swinged between 11,1 and 12%. This might be OK, depending on sensor calibration:
- sensor RCal measured resistance (between WBO2pin2 and WBO2 pin6): 125 ohm
- wbo2_calibration=BA (from mcd dump)
- wbo2_abs_limit=E0
- wbo2_limit_maxt=F0
- wbo2_fallback=70
- wbo2_retry_t=06
- wbo2_edgetime_corr=BA
- wbo2_edgetime_min=50
- wbo2_ri_target=96
- wbo2_nernstdc_target=88
- wbo2_pump_pw_zero=66
- 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
Just to make sure, i connected another sensor (from Innovate LC-1). Then it showed 20,9..21%, as it should.
- Can i assume that the first sensor is faulty?
- About 2mins after applying the mde02 command, couple of mlls
- Ri:0091 Nernst:10EE
- Heat:80 Pump:A5
- AFR=? 13.2
- AFR=11.58 P ON
- AFR=? 13.3
- AFR=11.58 P ON
- This LCD page has many nice internal data that is useful for debugging. Eg, we can see if Ri>600 (cold sensor) which is usually caused by lack of heating, if, say, the heater is not powered - a common mistake is to try to supply power from an unsuitable node. You should also show us some of these mlp07 LCD (page 07) snapshots (mll to take one snapshot or mdf01mdk01 for continuous dump, mdf00 to switch this off).
What could be, for example, this unsuitable node?
My WBO2 supply is wired parallel to Vems supply, with own fuse ofcourse. Just like in PhatBobs manual.