The issue: The Tiger stalls occasionally on idle. Sometimes it seems to hold regular idle around 1000rpm, other times it drops down to 3-400 RPM on the verge of stalling and if I give it gas it cuts out. It always restarts.
What I’ve done so far: replaced the fuel filter and spark plugs.
Next target: The idle stepper motor:
MOTOR, STEPPER, ISCV T1240888 $123.61
O-RING T3600037 $1.37
HOUSING,ISCV,3 CYL T1241064 $42.79
GROMMET, ISCV T1241063 $3.84
TUBE,CORRUGATED,200MM T1242502
2000MM $18.45
TUBE,CORRUGATED,145MM T1242501
145MM LONG $18.45
$208.51US = $281.34CAD
From Bikebandit’s online parts diagrams: https://www.bikebandit.com/oem-parts/2003-triumph-tiger-955i/o/m121594#sch565827
Visual inspection: Gasket (#4 on diagram) is partially squashed, may not be sealing. One of the pipes was loose going into the back of the unit.
Next step: remove the gas tank (again) and remove the entire throttle control/idling system, including pipes, and inspect for breaks. Replace pipes if damaged. If no pipe damage evident, look into getting a new stepper motor from Inglis Cycle.
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