Members Page/Mercedes Sel Five Point Six

M117 5.6L even-fire V8 engine, Mercedes 560SEL model 1990 and 1991 (2 engines, 2 harnesses, same specs, theoretically)

Trying to assemble the puzzle... As I understand (orig info "quoted")

Ordered 2 kits from [Hendrik]
- "The only problem we had when we install the kit is idling."
originally both were running (with 1 or 4 ignoutputs ? 4 ignoutputs correct ?)
ignition was changed from EC36/pin36 to EC36/pin11 while the engine was running => ECU damaged
The other engine was also running, but idle was not tuned
- tuning the idle can be done locally, not by sending the ECU to another continent.

Wiring

[original harness.pdf] (the only thematical information received, might not be uptodate, see ignition and IAC. Anyway keep the pdf open while viewing this page )
- beware that IGN1 .. IGN8 numbering in this pdf is non-standard (subtract 1. The EC36/.. pin should be authoritive)

Ignition Firing order : ... ?

THE FIRING ORDER IS 1-5-4-8-6-3-7-2

Note: All ignition wires lack fuses (there is only 1 10A fuse in the whole harness, zzz... Not good, must be added).

"We did all the installation as Instructed but unfortunately while the engine was running the main 12v wire was shorted and the ecu burn"
"We changed one of the ignitions outputs from 35 to 11 as Elbe instructed and run again but there was a smoke and one of chips was smoking and fire"
"The other ecu it was a mistake changing the ignition while engine running"
- you mean "changing ignition output in config" while engine running ? Or changing the wiring somehow ? (usually difficult with EC36 plugged in, but who knows :-)
- was it reconfigured in the "ignition outputs" dialog that starts with red "Must not be changed with running engine" ?
- You made a video of the IGBT smoking (apparently the full event, from the beginning)... What is the history of that ? It almost seems like you were prepared for the smoke. Just curious

Originally as in the pdf, later Changed to ... (information from Waleed, no EC36/pin.. reference)

Red is +12V.

EC36/35 (ignch0) Yellow (cylinders 1 and 6)
- changed from EC36/pin35 to EC36/pin11 (ignch4) while engine running ?
EC36/33 (ignch1) Green (cylinders 5 and 3)
EC36/34 (ignch2) White (cylinders 4 and 7)
EC36/36 (ignch3) Blue (cylinders 8 and 2)
- EC36/36 trace burnt inside the ECU. Isn't it possible that EC36/36 was changed in config while engine was runing ?
- note to installers: using ignch0 and ignch1 will work with a VEMS ECU with 6 or 8 IGBTs, it is smarter to allocate ignch 2,3,6,7 so it could also work with just 4 IGBTs (GenBoard/Manual/IgnitionOutput).

Opel P/N - [1208065]

these are 2x2 passive wasted spark ignition transformers (with 3-pin AMP connectors, suitable for inductive ignition, and quite rugged for the 25..45USD price, reliable, also easy to replace)
- so obviously 2 modules are used
- fuses should be used, 3A or 4A for each ignition output (4 ignfuses total). Change to 5A after engine is tuned, and all is well.
- dwell probably 3msec

IAC

Can you detail your Idle air control setup ?

Is it PWM type?

THERE WAS NO IAC VALVE WITH THE KIT. THE RECOMMENDED ONE WAS TAKEN FROM BMW540.

Why are there so many IAC pins in the kit wiring pdf ?

EC36/pin12 (ignch5) Brown for "M117 kit"
EC36/pin24 (ignch6) (M117/M103 kit, but no color in the pdf). What does this mean ?
- What are the actual IAC pin from the ECU ?
- (of course the IAC also has a +12V side, hopefully through a 4..5A fuse)

Config

[original vemscfg] (ignition should be compared to above)
- do you happen to have running vemslog ? (when tuning idle, it makes sense to capture vemslog for later analysis)

Trigger

Primary trigger: EC36/pin27 VR or HALL ?

Secondary trigger: EC36/pin13 HALL

Any triggerlog captured available for verification ?

THE TRIGGER IS VR 36-1 FLY WHEEL WITH FORD CRANCK SENSOR.

THERE IS NO SECONDARY TRIGGER.

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