View Full Version : 89 merc beep
07-08-2008, 09:02 PM
hello. i am a total newbie. i just bought a boat with a 89 black max xr4 150. runs great. however, i get the steady beep alarm all the time. i have ran the boat for hours and have not blown it up yet! so i am pretty sure it is something electrical. any ideas? any help is appreciated. thanks
07-09-2008, 10:39 AM
The constant tone is the overheat alarm. There are a couple of things to check. The first is to make sure the engine is pumping water. Next is to check the sensor which I believe is in the top of the Cyl head. If the sensor is good, then start checking the wiring harness. If the circut is grounded, then the alarm will sound. Good luck.
07-09-2008, 04:44 PM
i will check those out. thanks!