well it's also by the way ur nozzle goes in, but it's because the sensor sense some gas touching the tip of it and automatically shuts off...

there might be some splash back thats affecting it...

i know on my parents car i have to hold the nozzle just half way in so it wont keep clicking off...

 

You dont need to put the nozzle in deep, just put the tip in..lol. No really i have the exact issue. i just put the nozzle halfway in...hasnt failed yet