what style of radio did you get cause i think they are just a random pick ifor my tornado i got one with a black steering wheel on it and it has had no problems then with my volcano i got one with a chrome steering wheel and it was acting up like that all i needed to do was carefully take it apart and were the crystal goes in i clamped the female part inside i little tighter for better conectin to the actual crystal no problems since the maybe try that good luck if not radio it warranteed if not i think i read somewere else to make sure and put some tape arond batteries to hold them in place since there is enough room in base that if you hit a bump right you can knock loose a battery and then all h^&* breaks loose good luck

or maybee your glow plug is to hot LOL