I have some questions about the EGR position. I have one of my monitored parameters on the Dashdaq set for EGR_ERR. its range is -100 to 99. Does anyone know (1) is that reading the feedback from the position sensor or is that the number the computer is telling the valve to get to. In process control terms, is that the measurement or the setpoint? (2) Is "99" open or closed?
I run the 250 tune because for one, I can't afford any bigger tunes and I really don't think I need them for a daily driving. I read or asked before if the 250 tune closes the EGR valve and it was my understanding that it was closed under acceleration. It seems that I can be driving down the highway and sometimes it reads -100 and sometimes it reads 99. I'm also not sure what the system control bases its status off of, temperature? particulates? Regardless of what it measures, I can't find any pattern to its position. Maybe there's an electronic glitch somewhere in the measurement or the monitoring. Sometimes it seems to pop open and then shut right away.
Perhaps I should make a recording and analyze the numbers. (?)
(did that all make sense?)
I run the 250 tune because for one, I can't afford any bigger tunes and I really don't think I need them for a daily driving. I read or asked before if the 250 tune closes the EGR valve and it was my understanding that it was closed under acceleration. It seems that I can be driving down the highway and sometimes it reads -100 and sometimes it reads 99. I'm also not sure what the system control bases its status off of, temperature? particulates? Regardless of what it measures, I can't find any pattern to its position. Maybe there's an electronic glitch somewhere in the measurement or the monitoring. Sometimes it seems to pop open and then shut right away.
Perhaps I should make a recording and analyze the numbers. (?)
(did that all make sense?)