Old Maytag Gas Dryer Model DG308. Brother in Law was trying to fix, now I got involved. Drum turns fine. The Gas would not come on. Ignitor lights then goes off. I replaced the three coils for the gas valve. THe replacements coils were different color wires than original. Still did not get gas. Flipped coils on there post and was able to get the gas to come on. But the flame never changed and it would shut down and restart light (cycle). I jumpered the High temp switch and the flame stays on. I got a new flame sensor but I compared it to the old and they both open (switch contacts) with a candle test. I have the front of the dryer off so the heat can blow in the drum and have not restriction. I also use a cheater cord to test the coils. The secondary coil clicks and the Holding and booster wire in parrallel click. Not sure what else to test.