SYS message - ZR-1 Net Registry Forums

DTZ ZR1 · 05-23-2009

I have a 1990 ZR-1 and have been getting an SYS message to the left of the fuel guage. I believe it has to do with the computer or one of the systems off of it. The car runs rough in the low RPM spectrum especially when I give it the gas quickly, once I get above 3000 it seems to be fine. If I back off a little it seems to straighten up some. It also seems to be somewhat intermittent too. I do not have a check engine lite either. I have hooked it up to a code reader and it shows no codes. I need to know where to start looking. It has about 59,000 miles, I believe it still has the original plug wires, I am going to pull the plugs out today and check them. Thanks to anyone that can help.

DT

05-23-2009

Sys is more than likely due to a weak battery.

As far as the low stumble. Replace wires, plugs, possible coils and the big thing the injectors.

DTZ ZR1 · 05-23-2009

I was afraid that it could be the injectors. Will change the battery and plugs, wires and injectors. Thanks

DT

05-23-2009	#1
DTZ ZR1 Join Date: Jan 2009 Location: Mansfield, OH Posts: 28	SYS message I have a 1990 ZR-1 and have been getting an SYS message to the left of the fuel guage. I believe it has to do with the computer or one of the systems off of it. The car runs rough in the low RPM spectrum especially when I give it the gas quickly, once I get above 3000 it seems to be fine. If I back off a little it seems to straighten up some. It also seems to be somewhat intermittent too. I do not have a check engine lite either. I have hooked it up to a code reader and it shows no codes. I need to know where to start looking. It has about 59,000 miles, I believe it still has the original plug wires, I am going to pull the plugs out today and check them. Thanks to anyone that can help. DT __________________ [FONT=Times New Roman]DT[/FONT] [FONT=Times New Roman]'90 Red ZR-1 #2300 LT-5[/FONT] [FONT=Times New Roman]'85 Bronze (Almost complete)[/FONT]

05-23-2009	#2
Jeffvette Guest Posts: n/a	Re: SYS message Sys is more than likely due to a weak battery. As far as the low stumble. Replace wires, plugs, possible coils and the big thing the injectors.

05-23-2009	#3
DTZ ZR1 Join Date: Jan 2009 Location: Mansfield, OH Posts: 28	Re: SYS message I was afraid that it could be the injectors. Will change the battery and plugs, wires and injectors. Thanks DT __________________ [FONT=Times New Roman]DT[/FONT] [FONT=Times New Roman]'90 Red ZR-1 #2300 LT-5[/FONT] [FONT=Times New Roman]'85 Bronze (Almost complete)[/FONT]