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View Full Version : Mercury 250 Ofshore alarm problems



haolecrab
12-14-2006, 01:44 AM
Problem with alarm: When key first turned on, the buzzer (alarm horn) beeps twice. If you leave the ignition on or start engine, the alarm will sound beep-beep-beep and continue. Found the cause! It was not the oil alarm, overheat alarm (sensors) or the water in fuel canister sensor. It turned out to be the throttle position sensor harness connector was faulty. I cleaned the 3 wire connector and now the alarm is working. Question: How is the TPS even associatted with the alarm system/black box on rear of engine! I can not see in the manual any connections between the alarm system and the ECU system. Any ideas? Thanks

Reaction19
12-16-2006, 05:48 PM
dont worry if it aint broke dont fix it. just beat the piss out of it....