Hi guys, my 1999 900ssie has developed an intermitent fault when up to temperature,when the fault appears she runs real lumpy,black smoke from exhaust and struggles to idle,if she stalls can be difficult to restart.I have read that the temp sensor on the vertical cylinder can cause these symptoms,I have disconnected the sensor when she is warmed up and the symptoms are identical,my question is can these sensor be intermitently faulty because it only happens every now and again, I have cleaned the contacts and I am happy the connection is sound ? also is there an equivelent part or do I need to by genuine ? best regards Daz