Exup servo has mind of its own.

rdgravy · Post by **rdgravy** » Thu Jul 24, 2014 4:33 pm

Would anybody know what might cause this. Sometimes the servo operates of its own accord whether the engine is running or not. I only noticed because the valve itself has a little squeak to it. The servo just turns itself back and forth opening and closing the valve whenever it feels like it. It doesn't do it all the time and the bike itself seems to run fine regardless, I just wondered whether it's going to burn out the servo at some point soon. Thanks.

Post by **Stig** » Thu Jul 24, 2014 4:47 pm

being as you have more parts from other bikes, i'd try swapping bits over starting with the ECU then the servo

rdgravy · Post by **rdgravy** » Thu Jul 24, 2014 7:44 pm

thanks Stig, I will do. Just wondered if anyone had ever come across it before. Thanks.

faststeve · Post by **faststeve** » Sun Jan 11, 2015 11:31 pm

Had the same prob on my yzf 750, fault code and exup going on and off at will, turned out to be the connector giving intermittent contact and sending it haywire, everything looked good and continuity shown on all wires as spec, so it was a a puzzle, it was only when I found I could operate the servo by tapping the connector I realised it was a poor connection, just change the entire connecter and all good, always worth double checking even what seems ok where electrics are concerned,

rdgravy · Post by **rdgravy** » Wed Jan 14, 2015 6:42 pm

thanks, I'll try and have a look next time it's out.