SYS flashing - ZR-1 Net Registry Forums

petervankleeck · 09-17-2019

Without the engine running, when I put the key in the ignition the SYS flashes on the dash. Starts right up, flashing the SYS, strongly runs for an undetermined amount of time and stalls. Throws the C41 code. New fuel pumps and fuel relays. Could the key chip be the problem? Just installed the Haibeck AYBKG chip. Resolved all kinds of issues (idle is perfect; runs cooler; and all this time I thought the high idle was a missed vacuum leak) but this SYS persists. It's not the ECM. Runs like a champ, when it's running. Any help would be appreciated.

Thanks!

Peter

1990 ZR1 #659

09-17-2019	#1
petervankleeck Join Date: Mar 2019 Location: Manassas, VA Posts: 25	SYS flashing Without the engine running, when I put the key in the ignition the SYS flashes on the dash. Starts right up, flashing the SYS, strongly runs for an undetermined amount of time and stalls. Throws the C41 code. New fuel pumps and fuel relays. Could the key chip be the problem? Just installed the Haibeck AYBKG chip. Resolved all kinds of issues (idle is perfect; runs cooler; and all this time I thought the high idle was a missed vacuum leak) but this SYS persists. It's not the ECM. Runs like a champ, when it's running. Any help would be appreciated. Thanks! Peter 1990 ZR1 #659 Last edited by petervankleeck; 09-17-2019 at 04:13 PM.