1981 Volvo 242 DL
The car is put together with mainly fabric new parts my dad had lying around in his workshop from his days tuning old Volvo's.
- B21ET Turbo engine w/Mitsubishi TD04HL16-T turbo.
- Volvo 940 Turbo intake manifold with Bosch 337 cc/min Low-Z injectors and Volvo 850 TPS.
- Custom made triggerwheel with Honeywell 1GT101 same as [this car]
- Singe coil and distributor ignition, no cam sensor.
- VEMS v3.3 firmware 1.0.38.
Trigger hits approx 65-70° after 0°.
Trigger should give signal ~60 degrees _before_ tdc /Emil
Update 2006-11-17
The car runs well with standalone ignition unit (Lumenition).
When using VEMS ignition, I cant get the ignition over 0° while cranking.
- If I set "TDC after the trigger" lower than "2" my timinglight stops blinking. I tried 5-10-15 and 20 on "Priming, Cranking, Afterstart" - "Cranking advance" and still I get 0° on the timinglight.
- that is no surprise:
- "TDC after trigger" (ign_tdcdelay) should be around 66 degrees in this case. Below 40 degrees is invalid setting anyway (It must be 5..10 degree higher than maximum ignadv.)
Could this be firmware related? (1.0.38)
MSQ file [here]
A: TDC after the trigger should be 65-70 if the trigger is mounted properly. if you have it at 65-70 after the trigger, your setting should be 110-115 degrees.
Also make sure that ignition offset, under Extras , Advanced ALS is set to 0 degrees.
A setting of 2degrees TDC after the trigger will make it impossible to have advance above 2 degrees.
Q: Changing it to 110 and so on didn't quite do it.. when strobing I got about 40-45° and increasing tdc after trigger more didn't help either.
The 1GT101 hits the 60° BTDC tap I marked on the picture.
What am I doing wrong?
Yes, ALS advance is 0.