I think its both the steering and throttle that glitch. The glitching only happens when the car is 35 or 40 feet away and starting to lose the signal. My receiver and crystals are brand new. I've also tried other crystals and they didn't help. I'm thinking its the transmitter at this point. Its a 15 year old Airtronics XL2P. It worked perfect about a year ago when I last used it though.