Killed the ‘Cat
Q: I’d just finished working on my Yamaha Thundercat. It started fine but while letting her warm up the rev counter started shooting up to 7000rpm then back to 0rpm although the engine speed was not rising. The headlight was also dimming and brightening. Then the engine died and then there were no electrics at all. Any ideas please? Paul Wright, PS Facebook Group
A: Saul Towers says: The business with the rev counter indicates a fault code, in this case with the throttle position sensor. However it seems there are further issues here. Check earths, battery terminal and block connectors as well as in this case fuses. Retrace your steps on the work you were doing to see if there’s anywhere you might have introduced issues.