M117 5.6L even-fire V8 engine, Mercedes 560SEL model 1990 and 1991 (2 engines, 2 harnesses, theoretically of same specs)
Trying to assemble the puzzle... As I understand
- 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 : ... ?
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 ?
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) ?
- EC36/33 (ignch1) Green (cylinders 5 and 3)
- EC36/34 (ignch2) White (cylinders 4 and 7)
- EC36/36 (ignch3) Blue (cylinders 8 and 2)
- 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?
- Measure resistance,
- take note of partnumbers.
- Did it react to openloop changed during initial testing ?
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)
- any validation errors ?
- suspicious things ?
- recommendations ?
Trigger
Primary trigger: EC36/pin27 VR or HALL ?
- 60-2 ?
Secondary trigger: EC36/pin13 HALL
- 1 pulse per 720 crankdeg, right ?
Any triggerlog captured available for verification ?
Unrelated:
- see FileArea to upload image, vemslog or zip files