Clifford AvantGuard 5.5
 

Got the clifford AvantGuard 5.5 with intellistart , alarm and intellistart were working fine when i went away 2 weeks ago ,now when i stop and go through the remote startup process all works fine untill i open the door and it just shuts down ,so i reprogrammed the RPM ,now if i get out of the car quick enough i can shut it down with the remote ,and start it with the remote but it only runs for about a minute then shuts down , 2 weeks ago i could get out and let it idle for 20 mins and then arm it and it would shut down
is there a setting that could have changed some how ?
hope this makes sense Any Ideas ?
Thanks
Gary