Tazithman

I'm not a real mechanic but I play one on TV
Joined
Jun 28, 2019
Messages
34
Location
St. Louis, USA
Ride
2007 Triumph Rocket Classic touring
Check engine light comes on and goes off without rhyme or reason. Sometimes it will stay on for days, sometimes it randomly flashes off and on while riding, and sometimes it clears itself to come back a few days later.

This has been happening for a month and I've attempted checking for error codes with tuneecm 6 times. There is never a stored code. Bike seems to run fine with light on or off. I updated factory tune to the appropriate TuneECU variant and the light stayed off for a few days, only to come back again.

Anyone run into this before or have any ideas for what I can look for?
 
No, but I had similar in my van, been off 7-8 months now, never figured it out
 
I remember Click and Clack, the Tappet Brothers of NPR fame had a solution for cases like that:
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