It shuts the engine bcuz you have a full manifold vacuum -normally the EGR is provided with a ported vacuum. Meaning above the throttle plate and as you increase the throttle opening the vacuum will gradually increase.
To figure the correct vacuum above throttle plate you need a vacuum gauge-disconnect a vacuum hose above the throttle plate connect the gauge or use your finger and feel for vacuum-you shouldn't have a vacuum, if you got this Tee-in the vacuum hose at the EGR with this nipple and the disconnected hose this will solve your problem.
I hope its a Carb system that's what I gave you.
My type of engine 460 in an F250 75 body w/dual tanks.
Monday, September 3rd, 2007 AT 3:53 AM