- Thu Nov 08, 2018 8:16 pm
#30030
Hi
I have been working on converting my Volvo 940 Turbo (B230FT) to Speeduino for quite a while. However, i seem to have run into a strange problem now.
The engine runs as standard with a VR sensor. I have the VR-conditioner board from diy-efi.co.uk. I have been getting quite inconsistent results with this setup. It can run fine, looking at tooth logs for a couple of seconds, and then have some misses. I started out blaming the VR-sensor, and instead opting for a hall-sensor.
Several weeks later, i had built a toothed wheel to mount on my accessory drive at the front of the engine. I ended up destroying the only hall sensor i had, so i built one using IR-diodes instead, but with the same basic functionality. That being a square 0-5v signal.
With this entirely different sensor, and not using the VR-conditioner i am seeing the exact same issues. Thus ruling out the sensor. Also, the new sensors wiring was routed outside the car, to the ECU ruling out any interference with the rest of the wiring. The wires used are well-shielded.
I have swapped Speeduino board (as i accidentally broke the old one with a screwdriver), and swapped Arduino Mega 2560-board to a new, original one. As far as i can tell this means that i have swapped out all the hardware, ruling this out. Could it be firmware-related? Has anyone else experienced anything like this?
I have been working on converting my Volvo 940 Turbo (B230FT) to Speeduino for quite a while. However, i seem to have run into a strange problem now.
The engine runs as standard with a VR sensor. I have the VR-conditioner board from diy-efi.co.uk. I have been getting quite inconsistent results with this setup. It can run fine, looking at tooth logs for a couple of seconds, and then have some misses. I started out blaming the VR-sensor, and instead opting for a hall-sensor.
Several weeks later, i had built a toothed wheel to mount on my accessory drive at the front of the engine. I ended up destroying the only hall sensor i had, so i built one using IR-diodes instead, but with the same basic functionality. That being a square 0-5v signal.
With this entirely different sensor, and not using the VR-conditioner i am seeing the exact same issues. Thus ruling out the sensor. Also, the new sensors wiring was routed outside the car, to the ECU ruling out any interference with the rest of the wiring. The wires used are well-shielded.
I have swapped Speeduino board (as i accidentally broke the old one with a screwdriver), and swapped Arduino Mega 2560-board to a new, original one. As far as i can tell this means that i have swapped out all the hardware, ruling this out. Could it be firmware-related? Has anyone else experienced anything like this?