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Trigger Help needed!
Problems with trigger, rpm goes shortly to zero when engine are idling (500-800 rpm). At same time it seams as ignition from Vems is set to 0 degree, have installed two Bosch coils (webshop type) and loos sparkplugs just to be able to use timing light.
Using triggerwheel from BMW 60-2 and VR sensor from same BMW.
Old cabs and ignition are still controlling engine.
Upload of log files under SorenMartinSorensenRoverV8
How do I convert trigger log file to readable data?
Traditionally InputTrigger/TriggerLog (perl binary.pl <binary_captured_with_brayterm_mde40.log > readable.txt )
- but recent VemsTune has a wizard for it (see Tools / Analyze triggerlog). I had to rename to .triggerlog extension
You seem to have frequent extra pulse-noise at tooth 24 - almost always at this location (at other times the signal seems OK, with good 57 normal tooth and a 3.00 x long tooth). At some points the signal goes totally wrong, not sure if that is real or some recording artifact.
Try to review the shielding of the trigger
- move around ignition cables
- unplug WBO2 LSU4 sensor
- ....
Ignition coils
Any suggestion for fuse size for coils?
– 15A is blowing! 20A stand with low rpm, and 2ms charge time.
something is terribly wrong than! 4A used during setup shouldn't blow normally (that means about 7A peak current) and than by replacing with 5A fuse (peak current about 9A). Even with distributer, higher than 7A should never be needed.
Isn't that a CDI coil ?
- what type coil is that ?
- measure resistance of the coil
- also measure inductance if you can
Maybe misconfiguration ? Possibly output collision ?
Check validation and all outputs.
Overview
The car is a 1970 MGB originally with four pot engine, but in 1985 I needed more power so I converted to V8. The engine is from a Rover SD1 and is with twin SU carburetors and in present form about 160 Hp.
Plan is to convert to injection by using base part of manifold from Range Rover, with special made top part, as high in engine compartment is limited. Other parts will include injections nozzles, pump and pressure regulator from Range Rover and Genboard Ver. 3.2 to control it all.
When injection is install and running I will go on with ignition probably with four coils using waste spark. Changed plan, starting with ignition as waste spark with two coils with four output each.
MembersPage/SoerenMartinSoerensen/HistoryPage
2004.12.15 Søren.
Just fitting an injection started of a complete rebuild of car!
Status by now; VEMS is running on test bench. Hardware for injection has been prepared, and by shortening height of plenum camber bonnet can be closed.
Trial fit of engine before body goes to paint shop.
2007-11-24 Søren
Installed Vems in car,trying to get sensors right. Engine still using cabs and dizy.
2010-05-12 Søren.