Maytag gas Dryer ignites then flame goes out

[BaytagMaytag]

Model: Maytag LDG7600 gas converted to LP
This week my dryer stopped getting hot. So i inspected it and noticed the igniter wasnt glowing so i replaced that and also noticed my burner assembly was rusty so i replaced it also. So i turned it on and it the igniter lit up and i got a flame. The flame only runs for 8 seconds or so. I sat and watched it and two minutes later the ignitor lit up and the flame lit again only to stay lit for a few seconds. So i went to the appliance and got two new coils that sit on the gas valve. Went home and it still does the same thing. Could it be the flame sensor or a thermostat? Any suggestions
Thanks
David

[RegUS_PatOff]

has it worked correctly at all after the LP conversion, or is this the result of the conversion ?

[BaytagMaytag]

[QUOTE=RegUS_PatOff]has it worked correctly at all after the LP conversion, or is this the result of the conversion ?[/QUOTE]


It was converted to LP in 1991 and has worked excellent up until a few days ago

[DIY Guy]

I would suspect the flame sensor