2004 Sportster LE/DI long beep alarm
 

Engine starts well. After 2 min warming, when I want to accelerate I
get 1 long beep. Oil level is ok, fuel level is ok. Fuel gauge doesn't
work. I checked for obstruction at incoming water. This can last for 30
minutes. And for some crazy reason, all of a sudden it is ok for the
rest of the day. During beeping, I cannot accelerate; it doesn't take
its gaz; 3 sec beeping will occur sometimes at 10 sec intervals or at
one minute interval. Has done it for two seasons now. I have asked for
plug-in computer at dealer and result only indicated low battery
message. During problem I have put voltmeter and got 13v reading.
Has anyone ever had this problem before? Any ideas?