I am sure my urban neighbors sincerely appreciate me making this short video to demonstrate this issue at 6:30AM.
once it's processed
http://www.youtube.com/watch?v=aR5YPjd9uSo&feature=youtu.be
In words, here's what's going on. I have an engine in the front and an engine in the back of this car. Both are running Megasquirts, both Megasquirts are working reasonably well. The issue is with the throttle. Mashing the pedal at the front of the car pulls the cable opening the front throttle only. The front throttle position sensor feeds the resulting voltage to a home-grown throttle controller, which then applies user-settable variables to the input and in turn controls an OEM ford fly-by-wire throttle swiped from an E350 van, which is mounted to the V8 sitting where the back seat used to be. When the V8 isn't running this set up works perfectly, but once the V8 starts, it immediately ceases to function. I spent all afternoon yesterday hunting for the electrical grimlin that was making noise on an input or something causing the V8 throttle to cease working. I am now thinking that the issue may actually be mechanical. With the V8 running the vacuum pressure is too great for the servo to overcome the pressure?
Also - I never could get the V8 to idle under like 2500-3000. I then discovered that the fly-by-wire mechanical return spring didn't actually close the throttle. It is still cracked open. By placing my fingers on the throttle plate I could force a 1000RPM idle.
Does anyone know if these Ford FBW servos are intended to be driven both open and closed?
Any help is much appreciated.
