sewebster Posted July 13, 2011 Share Posted July 13, 2011 I was discussing the fact that modern engines completely cut off the fuel supply when you are just coasting down a hill with a friend on the weekend. We were wondering what sensor parameters the ECU needs to determine it should do this. I guess it could look at a combination of throttle position or MAF and engine RPM to see if the RPM is higher than it would expect and therefore figure out you are going down a hill? Also, does anyone know if pathies (MPFI vg30) cut off only at zero throttle, or if they can cut off if you are very slightly on the pedal as well (you might want to coast downhill a bit faster, but not as fast as the higher gear)? Link to comment Share on other sites More sharing options...
WarehouseRat Posted July 13, 2011 Share Posted July 13, 2011 load measured at the vss in the transmission at least on gm vehicles Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now