Q Why’s my Daytona afraid of the cold?
My 2013 Triumph Daytona 675 has developed an annoying problem. Most of the time it works fine but on some days when I take it out of the garage it will start and then cut out again.
To keep it running while it warms up I have to hold the throttle open slightly. It has also cut out at traffic lights just as I am about to move when the lights change. I have replaced the plugs and fitted a new air filter but I am starting to worry it’s an ECU issue.
Jenkinsk, MCN forums Answered by Adrian Clancy, Total Triumph It’s possibly a partially stuck idle stepper motor linkage. The linkage is between the stepper motor and the throttle body butterflies and can become a little ‘sticky’ over time, especially in the winter.
When this happens the stepper motor cannot open the throttle valves sufficiently for a fast idle and this will cause problems when cold. You will need to remove the airbox, then spray some lube on the linkage to free it up.
It’s a good idea to have it done at a dealership as they will be able to adjust the linkage if necessary, which is done using the Triumph Diagnostic Tool. Another possibility is a faulty or maladjusted throttle position sensor and the only way to test this is again at a dealership.
Won’t idle on a cold day? It’s probably a sticky stepper