Question about 2001 Suzuki VL 800 Volusia
Check all the fuses and fuse-able links in the system, and also check all the connections to your fuse panels, check all engine and body grounds,
you have multiple systems that are separate from themselves, (no direct connection between those circuits) only a large fuse or fuse-able link can cause that condition, or a burned connector or wire harness that has joined the circuits together, in that case the harness must be replaced or repaired
Posted on Mar 29, 2015
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Posted on Jan 02, 2017
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Following list of possible faults should help:-
Coolant sensor - engine is signaled as being 'cold' all the
time, not just at start up, causing ECU to set longer injection cycle
? Low coolant level can prevent sensor being able to detect coolant
? Faulty 'open' thermostat allows coolant to circulate without regulation
and perhaps prevents the engine from achieving normal running temperatures.
FPR - broken diaphragm allows fuel to enter
the vacuum line and then into the inlet manifold. Additional source of fuel
makes the fuel air mix richer causing a faster and lumpy idle.
Vacuum leak - 'high oxygen' signal
from O2 sensor causes ECU to set longer injection cycle.
O2 sensor - 'high oxygen' sensor error
causes ECU to set longer fuel injection cycle
MAF - 'over reads' in error the amount of air
entering causing ECU to set longer fuel injection cycle
IAT - 'under reads' in error the temperature of incoming air causing ECU to set longer fuel injection cycle
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