Sync Long Tooth Gap, appeared and disappeared?
Posted: Thu Aug 30, 2018 4:31 am
New Syvecs user here with a N54 PNP kit. Had a Sync issue this morning which left me stranded for a while and wondering what I should be looking at to determine the source of error.
Car has been running for 5 days or so, initially on a base file sent from Syvecs and I’ve been in the process of making fuelling revisions to subsequent programs without any significant issues I couldn’t easily correct. However this morning after making some additional injection time changes I ended up with a SYNC issue. I went ultra-lean shortly after driving off from a reprogram (however I had been idling with these changes made for maybe 10mins ok) and then the car shut down. I could not restart the car with any previous Cal file I had, even with the original base file all of which had been running fine.
The previous start which was ok showed:
SYNC: 0->TURN
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->720
MODE: CRANK->RUN
The failed start after my issue was:
SYNC: 0->TURN
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->720
MODE: CRANK->RUN
MODE: RUN-> CRANK
SYNC: 720->0 (LONG TOOTH GAP)
SYNC: 0->TURN
MODE: CRANK->STOP
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->0 (LONG TOOTH GAP)
MODE: CRANK->STOP
SYNC: 0->TURN
SYNC: TURN->0
So I was thinking a wire has come loose but then about 10mins later I tried to start the car as a last attempt and it did all OK again – I hadn’t made any changes at all.
Where is the best place to start diagnosing what might have happened here?
Thanks.
Car has been running for 5 days or so, initially on a base file sent from Syvecs and I’ve been in the process of making fuelling revisions to subsequent programs without any significant issues I couldn’t easily correct. However this morning after making some additional injection time changes I ended up with a SYNC issue. I went ultra-lean shortly after driving off from a reprogram (however I had been idling with these changes made for maybe 10mins ok) and then the car shut down. I could not restart the car with any previous Cal file I had, even with the original base file all of which had been running fine.
The previous start which was ok showed:
SYNC: 0->TURN
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->720
MODE: CRANK->RUN
The failed start after my issue was:
SYNC: 0->TURN
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->720
MODE: CRANK->RUN
MODE: RUN-> CRANK
SYNC: 720->0 (LONG TOOTH GAP)
SYNC: 0->TURN
MODE: CRANK->STOP
SYNC: TURN->360
MODE: STOP->CRANK
SYNC: 360->0 (LONG TOOTH GAP)
MODE: CRANK->STOP
SYNC: 0->TURN
SYNC: TURN->0
So I was thinking a wire has come loose but then about 10mins later I tried to start the car as a last attempt and it did all OK again – I hadn’t made any changes at all.
Where is the best place to start diagnosing what might have happened here?
Thanks.