Hi i have a yale glp050 2004yr i think with a mazda engine dont know the exact details of what happened was told the battery was dead in the morning they jumped it off a truck it started drove across the shop shut it off installed a new battery and it cranked but no start the forklift repair guy came said the regulator was bad put new in still no start hauled it to there shop called a week later said computer was bad not worth replacing so owner bought a new one they wouldn't give him nothing for it so it came back and got dumped in my shop i started playing with it first thing i found was the fuel solenoid was bad tested jumped to battery got a new one still no go checked power at plug no ground jumped it it comes on with the key and starts and idles great but chokes out with any pedal my question is i know its not supposed to open till its turning im guessing it uses the ground to control it ive been looking everywhere for information on what controls it heard vacuum, starter, rotation switch cant find any switch all the vacuum lines are good some help would be appreciated im not convinced its the computer thanks