I think you're supposed to be in VOR/LOC mode before engaging APP...

OK I did another flight last night and no problems at all .Good landing .Today I did another flight and what I can see is when the speed tape starts bouncing up and down no matter what I do I can not slow down and the AT light keeps blinking on and off.Also It will turn into the LOC and then it keeps turning .I now no it is not me but something is messed up .I get a good flight then the next one everything is going well the the speed tape starts bouncing and the speed keeps going up no matter what i do.Very frustrating. I hope some on can help Thanks in advance.

Yes I have. This seems to be a jumping of the speed tape and AT and keeps making the speed climb .If I extend speed brakes it still keeps gaining speed at strait and level flight.IT is like the speed tape keeps jumping up and down very fast and the AT light blinks in time with it.