No RPM Signal Under 2000 RPM
Posted: Wed Sep 27, 2017 3:17 pm
Hey All,
I'm a first time user of megasquirt and trying to run it using Ford EDIS. My setup consists of Megasquirt 2 V3.0 board. I also have a JimStim v1.5 to test my changes.
When I bought the board, it was pre-assembled and running a dual VR from jbperf. I removed the wiring from the underside of the board to set it up for Ford EDIS since I will not have a cam position sensor. I confirmed that the assembly of the board was done correctly and confirmed that step 50a was correct. I then followed the below for EDIS
V3.0 main board:
DB37 pin #36 to the SAW pin (#3) on the ignition module
DB37 pin #24 to the PIP pin (#1) on the ignition module
On the V3.0 main board:
use the 'Hall sensor circuit' (step #50.a in the assembly guide) - jumper D1 and D2,
jumper OPTOIN to TACHSELECT on the bottom side of the PCB, near the DB37 connector, opposite the heat sink,
jumper TSEL to OPTOOUT on the bottom side of the PCB, near the center.
jumper JS10 to IGN (this uses the processor port for the SAW signal directly),
jumper XG1 to XG2 on the bottom side of the PCB, near the 40 pin socket,
I also setup the following through TunerStudio
Trigger offset = 0° (this will vary slightly, depending on the wheel/pickup configuration),
Ignition Input Capture to 'Rising Edge', ('Falling Edge' for MicroSquirt® only if using the VR input circuit - not recommended),
Cranking Trigger to 'Calculated',
Coil Charging Scheme to 'EDIS',
Spark Output to 'Going High (Inverted)', ('Going High (Inverted)' for MicroSquirt).
Trigger Wheel Teeth to '0' (zero)
When I plug in the JimStim and turn the RPM coarse knob, the RPMS go off the charts, 30K. If I turn it all the way down, and use the fine adjustment knob I can get readings only above 2000 rpm.
I know the JimStim is OK because when I first bought the board I tested it in the original configuration and all was good.
Any one have any thoughts of what I can look for? I'm still working on getting a datalog. Like I said I'm new to this.
Thanks,
Jacob
I'm a first time user of megasquirt and trying to run it using Ford EDIS. My setup consists of Megasquirt 2 V3.0 board. I also have a JimStim v1.5 to test my changes.
When I bought the board, it was pre-assembled and running a dual VR from jbperf. I removed the wiring from the underside of the board to set it up for Ford EDIS since I will not have a cam position sensor. I confirmed that the assembly of the board was done correctly and confirmed that step 50a was correct. I then followed the below for EDIS
V3.0 main board:
DB37 pin #36 to the SAW pin (#3) on the ignition module
DB37 pin #24 to the PIP pin (#1) on the ignition module
On the V3.0 main board:
use the 'Hall sensor circuit' (step #50.a in the assembly guide) - jumper D1 and D2,
jumper OPTOIN to TACHSELECT on the bottom side of the PCB, near the DB37 connector, opposite the heat sink,
jumper TSEL to OPTOOUT on the bottom side of the PCB, near the center.
jumper JS10 to IGN (this uses the processor port for the SAW signal directly),
jumper XG1 to XG2 on the bottom side of the PCB, near the 40 pin socket,
I also setup the following through TunerStudio
Trigger offset = 0° (this will vary slightly, depending on the wheel/pickup configuration),
Ignition Input Capture to 'Rising Edge', ('Falling Edge' for MicroSquirt® only if using the VR input circuit - not recommended),
Cranking Trigger to 'Calculated',
Coil Charging Scheme to 'EDIS',
Spark Output to 'Going High (Inverted)', ('Going High (Inverted)' for MicroSquirt).
Trigger Wheel Teeth to '0' (zero)
When I plug in the JimStim and turn the RPM coarse knob, the RPMS go off the charts, 30K. If I turn it all the way down, and use the fine adjustment knob I can get readings only above 2000 rpm.
I know the JimStim is OK because when I first bought the board I tested it in the original configuration and all was good.
Any one have any thoughts of what I can look for? I'm still working on getting a datalog. Like I said I'm new to this.
Thanks,
Jacob