Lionel 6-11114 TMCC Mohawk

That sounds like R2LC trouble to me. They are generally a replacement only item. If you have another TMCC engine you could swap in the board and that will determine if the board is flakey. They are NLA at Lionel but Jim Sandman may be able to supply one; I am sure there are other sources too.

If you purchased the locomotive new from an authorized dealer, why not talk to Lionel Customer Service and return it for warranty. I have 3 different vintage Mohawks and all run fine. My last one was purchased from Mr. Muffins Trains and I did experience some issues similar to what you are experiencing. I sent it back to Lionel and they corrected the problems.  Why not talk with Lionel Customer Service and return it for repair. My three Lionel Mohawks all run fine on my Legacy Control System.

@Bill Park posted:

If you purchased the locomotive new from an authorized dealer, why not talk to Lionel Customer Service and return it for warranty.

Bill, this is a TMCC locomotive that's at least 20 years old!

Before you go too nuts, verify your antenna path is good, ….with the shell off, be sure the lead antenna wire is up, and not touching anything. Verify your locomotive shell’s handrails are isolated, and not touching the shell …..the coupler cut bar gets mighty close to the handrails on the L2a line up ( both TMCC & Legacy ) ……Once those items are verified, I’d try a reset to see what happens, …..if you have the owners manual, it’ll give you the steps……I believe the reset code is 74??……..also verify how you have this engine programmed in your remote,…..sometimes having a TMCC engine not programmed correctly will let it run, but odd behaviors can happen…..if that doesn’t work, than it’s more than likely a reception issue as Rod points out……could be a couple issues, ….check the magnet ring for cracks on the flywheel, and make sure it isn’t loose…..cracked magnet ring needs to be replaced, not glued…..Also could be an issue with the Oddesy driver……all above are known top suspects for odd behaviors….

Pat

@harmonyards posted:

Before you go too nuts, verify your antenna path is good, ….with the shell off, be sure the lead antenna wire is up, and not touching anything. Verify your locomotive shell’s handrails are isolated, and not touching the shell …..the coupler cut bar gets mighty close to the handrails on the L2a line up ( both TMCC & Legacy ) ……Once those items are verified, I’d try a reset to see what happens, …..if you have the owners manual, it’ll give you the steps……I believe the reset code is 74??……..also verify how you have this engine programmed in your remote,…..sometimes having a TMCC engine not programmed correctly will let it run, but odd behaviors can happen…..if that doesn’t work, than it’s more than likely a reception issue as Rod points out……could be a couple issues, ….check the magnet ring for cracks on the flywheel, and make sure it isn’t loose…..cracked magnet ring needs to be replaced, not glued…..Also could be an issue with the Oddesy driver……all above are known top suspects for odd behaviors….

Pat

I’ve already tried a reset, I’ll try again. It was acting funky out of the box too it wouldn’t respond to the legacy remote at all for a while and eventually it just started working. I already checked the handrails and at some point one was definitely touching the pilot but not anymore. It still messes up even with the antenna wire sticking up and not obstructed, I’ll check it’s molex connector on the board to make sure it’s fully seated properly.

@Bill Park posted:

If you purchased the locomotive new from an authorized dealer, why not talk to Lionel Customer Service and return it for warranty. I have 3 different vintage Mohawks and all run fine. My last one was purchased from Mr. Muffins Trains and I did experience some issues similar to what you are experiencing. I sent it back to Lionel and they corrected the problems.  Why not talk with Lionel Customer Service and return it for repair. My three Lionel Mohawks all run fine on my Legacy Control System.

No can do, my buddy didn’t get it from a dealer and with the age of this locomotive and the fact that Lionel no longer offers the parts I highly doubt they’d even look at it, ontop of that I’ve had issues with Lionels support before and Im sure sending this to them would only add more issues when I got it back.

@Rod Stewart posted:

That sounds like R2LC trouble to me. They are generally a replacement only item. If you have another TMCC engine you could swap in the board and that will determine if the board is flakey. They are NLA at Lionel but Jim Sandman may be able to supply one; I am sure there are other sources too.

I’ll check that, I have to see if I can find any other code CO8 R2LCs. If I could find an ERR R4LC would that work as a replacement? Also is there anyone who sells them separately from the cruise commanders?

@TheTrainMain posted:

I’ll check that, I have to see if I can find any other code CO8 R2LCs. If I could find an ERR R4LC would that work as a replacement? Also is there anyone who sells them separately from the cruise commanders?

That’s the problem …radio boards are like gold right now, …..obviously Lionel ain’t making them, and no separate sale ones available from ERR,……..if you have one you could rob as a test, that’d be your best bet to confirm your repair, then hunt one down…..plan on it stinging a wee bit…..

Pat

So here’s where I’m at,

I swapped the R2LC with one out of another locomotive and that solved the command issue I was having. The other issue is still very present. The magnet ring looks fine to me and at literally every other speed step she runs fine, it’s just speed step one. I also noticed that for a few seconds in reverse it seems to run ok before the issue starts up.
I attached some footage I took of her running at speed step one and at speed step 14 or 15.