DIYPNP MS2Extra - Stalling due to Sync Loss Reason 39, CAS signal
05-30-2016, 08:58 AM
#5
Senior Member
Join Date: Apr 2011
Location: Hollywood, FL
Posts: 807
Total Cats: 163
Are the pull-ups wired to 12V or 5V? Try opposite of whatever you have and see if it makes a difference. I have MS3 and an 01 engine but I would get sync losses with my pull ups wired to 12V and they completely disappeared when I put them to 5v.
I would have guessed this to be a ground problem but you said you covered that. And on the voltage spikes, while they may be present I don't know that it would affect the ecu. It should have a voltage regulator that can handle that or the ecu would be toast in no time.
Edit: and you can try different resistors for the pull ups instead of just the 1K ohm recommended. I know it's a proven installation but not every car is going to be identical for one reason or another.
I would have guessed this to be a ground problem but you said you covered that. And on the voltage spikes, while they may be present I don't know that it would affect the ecu. It should have a voltage regulator that can handle that or the ecu would be toast in no time.
Edit: and you can try different resistors for the pull ups instead of just the 1K ohm recommended. I know it's a proven installation but not every car is going to be identical for one reason or another.
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07-22-2017, 12:41 PM
#9
Newb
Join Date: Dec 2011
Posts: 19
Total Cats: 0
Any luck
I have a similar problem but only became more notorius when i turn on boost control.
check the video from second 50 to 60 the compose log is like yours...
https://www.miataturbo.net/megasquir...-signal-92626/
I have a similar problem but only became more notorius when i turn on boost control.
check the video from second 50 to 60 the compose log is like yours...
https://www.miataturbo.net/megasquir...-signal-92626/
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