early legacy chuff switch question.

Chuff switches can just randomly fail. Where the chuff switch lives in relation to the smoke unit is one factor that can kill a switch in short order. Smoke fluid can turn to varnish, and render a chuff switch useless. However, in your case, I’d take a closer look at the IR parts again, beings you’ve just done some sensor work. Chuff can drop out intermediately if the sensors lose sight of one another,…….a tell-tale of such a condition is if the chuff sounds operate as advertised on straight track, but gets interrupted on curves. Also, grades can play a role in IR sensor alignment. ……I’d take a harder look at the IR sensors on that particular case if I were in your shoes…..

Pat

thanks pat.

pat, the IR was good and aligned. no bad wires. turns out it was the chuff switch. it was hidden under the motor in the back.

it was a real pita to get to it,but I managed to get it without breaking somthing else or a wire off.

took it out and adjusted it and reinstalled it and wala magically it works fine now. those droped chuff sounds were annoying me so I had to fix it.

if only lionel still had the ac reg boards 😡 it would be good as new. oh well it is what it is. at least it runs good. thanks again pat.