no crank signal
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- Super MS/Extra'er
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Re: no crank signal
Would trying a Ford VR sensor be an option? I think this wheel may be too narrow for your sensor. There have been a few sensors we've tried, such as LS1 sensors, that would not get a good read on this wheel.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: no crank signal
Well about finished with this project after making a thicker tooth wheel today with absolutely no difference to the tooth logger readings.Tried with straight battery 12 volt to sensor and pull up resistor. Pretty certain at this stage that it isn't anything on my side as i know this setup has worked in the past. Just how or what the ecu is doing with the signal is for somebody else to figure but for now its going back to carby. No point attaching another data log as it is exactly the same as before with a few spikes and then nothing.
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- Super MS/Extra'er
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Re: no crank signal
Is the shell it's next to steel or aluminum?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: no crank signal
My first approach would be to look at the signal going into the VR input at Tach Select and the one coming out of the VR circuit to the processor at Tsel with a 'scope. That's where most of these sort of problems are.red wrote:Well about finished with this project after making a thicker tooth wheel today with absolutely no difference to the tooth logger readings.Tried with straight battery 12 volt to sensor and pull up resistor. Pretty certain at this stage that it isn't anything on my side as i know this setup has worked in the past. Just how or what the ecu is doing with the signal is for somebody else to figure but for now its going back to carby. No point attaching another data log as it is exactly the same as before with a few spikes and then nothing.
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.
Re: no crank signal
Can the VR sensor pots be adjusted on the MS3 Pro the same as you can on the MS2-Extra?
Re: no crank signal
the ms3 pro uses a different vr setupand it has no adjustment pots it a max992x ic same as what's in the microsquirt v3.
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
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Re: no crank signal
With the ECU powered up and turning the engine by hand, is the signal wire voltage going from 0-12V as teeth pass ?
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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Re: no crank signal
Good that it works there.
Go to Project Properties - Settings in TunerStudio and enable Port Status.
On the dash, right click and reload.
Look at the indicator called PORTT0 - this is the crank signal input. It must follow the crank sensor state. (I think it will be inverted but that's ok.)
James
Go to Project Properties - Settings in TunerStudio and enable Port Status.
On the dash, right click and reload.
Look at the indicator called PORTT0 - this is the crank signal input. It must follow the crank sensor state. (I think it will be inverted but that's ok.)
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
Re: no crank signal
Thanks for that reply James. I will be away fer a few days but will have a look at that when i am back.Also i will be able to do a decent log with the engine running on carby and may be able to figure something there.
Re: no crank signal
I was wondering the same thing if thats a big chunk of steel behind the toothed wheel may cause the sensor issues.Matt Cramer wrote:Is the shell it's next to steel or aluminum?
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
Re: no crank signal
Have set up a test wheel on a drill away from all metal and same result
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- Super MS/Extra'er
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Re: no crank signal
Is that test setup with the trigger wheel attached to a dampener, same as shown in the picture? It doesn't look like the wheel teeth protrude above the dampener much. However, that may be a moot point, since you have already verified that the sensor output "toggles" when you turn the crank by hand. Just trying to think it out...
Re: no crank signal
The test was completely off the engine
Re: no crank signal
Managed to get some headway on this today by using a vr sensor. Is it going to do the job at 7500 rpm on a 36-1 tooth wheel?
Managed to get engine started and idle fine with it.
I have a pressure gauge reading backwards, will reversing the wires do anything?
Managed to get engine started and idle fine with it.
I have a pressure gauge reading backwards, will reversing the wires do anything?
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Re: no crank signal
Generally VR sensors are more stable at higher RPMs than hall effect sensors. I recently worked on an install using the factory 60-2 and VR sensor at over 8000RPM
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
Re: no crank signal
Wow. It sounds like it will do the trick then. What about the gauge readings?
I will do a log today and post it tonight
I will do a log today and post it tonight
Re: no crank signal
Have you got the sensor calibration for the oil pressure sensor correct because in the msq at the start of this thread its set to use the gm temp sensor calibration.
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
Re: no crank signal
Its a gm sensor from diy and i used the gm calibration.--But i will re check
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Re: no crank signal
"GM calibration" means GM temperature sensor calibration. That will be wrong for any normal linear pressure sensor.red wrote:Its a gm sensor from diy and i used the gm calibration.--But i will re check
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".