When you run the dryer you'll here the "click" the igniter will glo and the flame will come on. But the problem is it won't stay on. It only remains on for 5-10 seconds.
I was told the problem could have to do with airflow. I've removed the front panel on this dryer and cleaned it out. I cleaned out all of the "caked" lint through the entire machine. We even took off the rear exhaust.
After reading, I've come up on opinions of valve solenoids or a flame sensor. I'm leaning toward the flame sensor, but I'm not 100% sure and need the assurance.

Thanks Gene. The flame is mostly blue and the motor wheel is turning OK. I've been running the dryer with the front panel off for now. Thanks a million!!! :) :) :) :) :)

Hi Gene,

I replaced the thermostat. My result is almost the same as before. The flame now looks more blue, but is still going on and off. The only difference from before is after the flame shuts off there's a second click and the dryer seems to be a little hotter inside than before. Bad solenoids?

Thanks,

Mark