ZR-1 Net Registry Forums - View Single Post

XfireZ51 · 06-25-2008

Todd,

If you look at the scan, the timing went to 20d even tho the Port Throttle was still open. All of the mechanical bits for the secondary are in there. I removed the throttle plates only. Again, looking at the scan, you'll also see that the secondary MAP signal was more than adequate for maintaining the port throttles open. Its not an issue with the port throttle logic or mechanism. I thought it may have been when I first saw the SES light.
My thought was there may be something wrong with the timing which then caused the ECM to throttle back the injectors

06-25-2008	#12
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Code 55 Lean Condition at WOT Todd, If you look at the scan, the timing went to 20d even tho the Port Throttle was still open. All of the mechanical bits for the secondary are in there. I removed the throttle plates only. Again, looking at the scan, you'll also see that the secondary MAP signal was more than adequate for maintaining the port throttles open. Its not an issue with the port throttle logic or mechanism. I thought it may have been when I first saw the SES light. My thought was there may be something wrong with the timing which then caused the ECM to throttle back the injectors