Paul N Wyoming , MI January 11, 2020 Appliance: Maytag Gas Dryer MGD5800TW0 Maytag Dryer Mgd5800tw0: Warmed up then failed to heat further leaving clothes damp for hours. How to replace Dryer Gas Valve Coil Kit. Replaced gas valve solenoid coils which fixed the problem. Suspected flame sensor also, but that proved ok. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes