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Topic: Cruise control and Retarder do not work on 2005 500hp U320 (Read 232 times) previous topic - next topic

Cruise control and Retarder do not work on 2005 500hp U320

The CC and Retarder apparently don't "think" the coach is in motion (while it is being driven) and so neither work.  Perhaps it is the Allison Trans or the Cummins Diesel brain.  Anyone had this issue?  I am asking for a friend who is trying to figure out the next step...No Silverleaf for a 2nd opinion on this coach.

Thanks
Carl and Kathleen
Killeen Texas
1997 U270

Re: Cruise control and Retarder do not work on 2005 500hp U320

Reply #1 –
You're asking for a friend.... So is it the 97 U270 in your signature or a different coach? That's going to matter.
Dub McBride 1996 270

Re: Cruise control and Retarder do not work on 2005 500hp U320

Reply #2 –
Now I see the coach in question in the thread title.
Dub McBride 1996 270

Re: Cruise control and Retarder do not work on 2005 500hp U320

Reply #3 –
Carl,

Most likely not either trans. or engine ECM, more like they are getting a bad signal. Now I ain't lost my mind but on that age coach it can be a bad anti lock brake sensor on a tag causing this trouble. Remember both of these systems (cruse and retarder) are intertwined so it may need some real troubleshooting and more info as to what is found.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."