dryer stays hot for acouple minutes

have a gas dryer will start cycle hot but usually finishs cold i replaced thermal fuse and new heating element and new exhaust hose. the sensor heats up then goes off then back on but not for whole cycle not sure what next to do troubleshooting guide says either coil or flame sensor dont want to keep replacing and not getting results

[SIZE=3]I have seen the coils on top of the gas valve work for a few minutes and then open up and stop working. This is just a guess and because it’s intermitting can be hard to check. [/SIZE][SIZE=3]It is also unlikely but you have changed the parts that commonly cause this. [/SIZE][SIZE=3]Hope this helps![/SIZE]

Replace the coils on the gas valve. The secondary coil is bad, but it is always best to replace them both. It is a cheap repair, and a easy repair.