breyfogle
New member
Does anyone know the failure symptoms of a K-bike coolant temperature sensor ? I've got an 89 K75S that has begun to act "funny" during cold starts (Cold being engine at ambient temperatures of 50 to 60 F or so, not having been run). Basically, when cold it will not idle fast enough to run and if it stalls it is hard to restart. As the engine gets a bit of heat into it, it improves. When warm it seems to start and run normally.
First thought was vacuum leak but everything seems to OK WRT to the common sources of vacuum leaks (e.g. the Z-hose). Second thought was maybe the computer thinks the engine is hot when it is really cold. Does anyone know if the coolent temerature sensor is normally open or closed when cold and whether that tells the computer the engine is hot or cold ?
First thought was vacuum leak but everything seems to OK WRT to the common sources of vacuum leaks (e.g. the Z-hose). Second thought was maybe the computer thinks the engine is hot when it is really cold. Does anyone know if the coolent temerature sensor is normally open or closed when cold and whether that tells the computer the engine is hot or cold ?