Changes by last author:
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Main Project Page Link:
http://www.vems.hu/wiki/index.php?page=MembersPage%2FKevinBlack%2FVWGTIAnother Contains mct/mcd dumps, and links to the wiring information ---- Wiring Page: http://www.vems.hu/wiki/index.php?page=MembersPage%2FKevinBlack%2FVWGTIAnotherWiring ---- Essential info needed to investigate Because fuel-dump can be caused by either misconfiguration, or it can be related to HW damage (perhaps at the same time as the mcp3208 damage), we need to be able to verify configuration with respect to wiring. Please do not ask for help until this is filled in: ( IssueReports can give hints on other useful info ) * wiring (split to sections: injout / ignout / otheroutput / sensors / flyback / grounds / other ...) * firmware version: 1.0.73 (confirmed) * mcd / mct dumps **'''MCD: http://www.vems.hu/files/KevinBlack/mcd-saved.txt MCT: http://www.vems.hu/files/KevinBlack/mct-saved.txt (these are several weeks old, after the first two fuel-dumps.''' ** we will verify ... _channel and h[0] if some might open the injector and flood the engine ---- |
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Problem #1 Twice, shortly after making a change (what change?) in Megatune, the ECU "locks up" and causes the injectors to stay open and fuel pump to run, hydralocking the motor.
* Second time change was the Fuel pump power-up time, from 5 seconds to 60 seconds. * First time, I do not remember, likely Start Fuel change though as I was tuning the startup. These seem harmless. |
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Problem #1 when turning ignition key-on to start the engine, or cranking the engine and unsuccessful startup, the ECU "locks up" and causes the injectors to stay open and fuel pump to run, hydralocking the motor.
This has happened now 4 or 5 times. |
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** I don't know the difference between "planning" and "effective wiring". I am not a hobbyist, I do this professionally for 2 years and overall for about 8 years. I did plenty of planning, please see the wiring information.
*** WHERE exactly ? This page looks like asking for help without describing the setup. No details (or link) for wiring and mcd / mct. |
| ** I don't know the difference between "planning" and "effective wiring". I am not a hobbyist, I do this professionally for 2 years and overall for about 8 years. I did plenty of planning, please see the Wiring Information Page: http://www.vems.hu/wiki/index.php?page=MembersPage%2FKevinBlack%2FVWGTIAnotherWiring |
| *** please see wiring details and MSQ file in link (WHAT LINK?) for output setup. |
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It is best to publish for review (split to subsystems at least trigger, inj and ign) before doing wiring and powerup.
- Felt it not necessary due to other successful project (that I made myself as a 100% plug in ECU) |
| - Only thing I can think of is I used chassis ground for my Autronic air/fuel analyzer |
| - Only thing I can think of is I used chassis ground for my Autronic air/fuel analyzer deleted, did not use analyzer during the last 3 fuel-dumps |
| - Yes, the car has a small battery that went low 20+ times in a week. Battery charger was used, jumper cables were used only AFTER the second ECU lockup. |
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** Yes, the car has a small battery that went low 20+ times in a week. Battery charger was used, jumper cables were used only AFTER the second ECU lockup.
***Update: battery was replaced with full size battery. 3 more fuel-dumps since then |
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* After turning the power OFF (how exactly?) for a few minutes, everything was fine the first time, however the second time I think the (edit) MCP3208 was damaged.
- Simply turn off Ignition Switch and wait the first time. The second time I unhooked the Battery because I was fearful of the ignition coil possibly being stuck ON (wired to battery that day, long story). (Ignition is now a VW VR6 2x3 coil pack(using only 2x2), using coil drivers 2 and 3, 3.0 to 3.5 ms dwell) |
| * After turning the ignition key power OFF for a few minutes, everything was fine the first time, however the second time I think the (edit) MCP3208 was damaged. |
| - Please see wiring details and timeline below. |
| *** Please see wiring details (top) and timeline below. |
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** I ended up changing the ignition to a Webshop 2x2 coil pack using 2 12v drivers
3) TPS Enrichment The TPS Enrichments are not working great (often adds fuel on small throttle transitions) ** what are the tps bins used? (the lowest one is most interesting, obviously). Is the TPS signal otherwise clean ? - TPS signal was originally very dirty, caused poor driveability. thought cause was possibly TPS near spark plug wires, moved the wires away from each other but this did not directly co-inside with "fixing" the problem. The problem "went away" by itself. - Maybe that was a "red flag" to a bigger problem? - Current TPS Enrich Settings: - Bins: 1,5,20,40 - Amount: 0,1,?,? oops ---- Essential info needed to investigate |
| ** I ended up changing the ignition to a Webshop 2x2 coil pack using 2 12v drivers. |
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Because fuel-dump can be caused by either misconfiguration, or it can be related to HW damage (perhaps at the same time as the mcp3208 damage), we need to be able to verify configuration with respect to wiring.
Please do not ask for help until this is filled in: ( IssueReports can give hints on other useful info ) * wiring (split to sections: injout / ignout / otheroutput / sensors / flyback / grounds / other ...) * firmware version: 1.0.73 (if I understand right) * mcd / mct dumps ** we will verify ... _channel and h[0] if some might open the injector and flood the engine |