onan 7500 genset. randomly getting code 24 after 5 minutes of run time. it shuts off. get this... only when its warm outside. if i start it in the morning, its fine and runs for hours. currently 67 degrees and raining. same yesterday morning. if i try to start it later in the day when its 80 plus degrees outside. it will only run for 5 minutes, and quit. not looking forward to changing it out, as its in the front of my class A, pusher, and it must come out the bottom.