the blower only comes back on (and this happens almost as soon as the furnace shuts down)also when the furnace does shut off.the fan seems to run a bit ,but when i tap on the furnace it shuts off.??

still havnt heard from you guys.?

this furnace # DGAT095ADC
my furnace has very short run cycles..will run for awhile and shut off....then 30 sec. later it comes back on..have a new T-stat and changed filters and made sure all flu pipes were clear.do you othink it could be the fan limit switch? thanks

scott martin