30-08-2015, 12:09 AM
As far as I am aware the PD engines have whats called an Anti-Shudder valve. This is controlled through vacuum and an ECU solenoid. When you turn the car off it snaps shut to stop the engine running on any diesel left in the fuel system and weirding people out that don't know why its running on.
The throttle plates that are in the more modern diesels are to help control how much EGR flow there is back into the engine. They can close slightly meaning that more is drawn from the exhaust gasses rather than fresh air to control emissions
The throttle plates that are in the more modern diesels are to help control how much EGR flow there is back into the engine. They can close slightly meaning that more is drawn from the exhaust gasses rather than fresh air to control emissions
View my build thread here
http://306oc.co.uk/forum/showthread.php?tid=28072
http://306oc.co.uk/forum/showthread.php?tid=28072