MN DynaTrak
Recruit
- Joined
- May 23, 2012
- Messages
- 2
I have a 1990 Pro V 150 and I have been having issues with the motor going into alarm when at Idle. I Purchased this at the end of last year and it ran great. I never had this issue, but I never let it idle for an extended period of time either. It goes into alarm if it idles for around five minutes. I then shut it off and let it cool and it will run fine until it idles too long again (takes around 10-15 minutes for alarm to stop). Otherwise it runs good under load and idles smooth.
I have done all the simple fixes that have been suggested on this forum.
- Water Pump - Full replacement
- Thermostats
- PRV valve: this I didn't change but cleaned and reinstalled, was in good shape.
What I found in doing all of this was that this motor had overheated at one time.
- The water pump had been changed and I found some melting in the plastic housing, nothing major, but it obviously had gotten hot once. I changed this first thinking it would fix the issue, but it didn't
- Next I addressed the PRV, the local parts store didn't have the new mushroom PRV so I took it out and cleaned it. I found a pebble of sand between the valve and the grommet. To be honest it didn't look stuck open. I cleaned it all and reinstalled it with a new gasket. I also changed the thermostats at this time, dropped the lower unit again and flushed water from a hose down from the stat housings to clean out any gunk that may be causing the issue. Sadly after all that I got the alarm again.
Today I noticed that it was the #1 cylinder (Top left as looking at the motor) that got hot. The temp sensor shows signs of getting too hot. The grease got cooked around it and the jacket on the wires is visibly heat damaged right as the enter the sensor, but I doubt the conductors inside got that damaged.
Would a bad sensor be causing my issues or did some serious damage take place and my motor is not cooling properly and causing the alarm?
The Bat signal out for a Yamaha Guru!!!
I have done all the simple fixes that have been suggested on this forum.
- Water Pump - Full replacement
- Thermostats
- PRV valve: this I didn't change but cleaned and reinstalled, was in good shape.
What I found in doing all of this was that this motor had overheated at one time.
- The water pump had been changed and I found some melting in the plastic housing, nothing major, but it obviously had gotten hot once. I changed this first thinking it would fix the issue, but it didn't
- Next I addressed the PRV, the local parts store didn't have the new mushroom PRV so I took it out and cleaned it. I found a pebble of sand between the valve and the grommet. To be honest it didn't look stuck open. I cleaned it all and reinstalled it with a new gasket. I also changed the thermostats at this time, dropped the lower unit again and flushed water from a hose down from the stat housings to clean out any gunk that may be causing the issue. Sadly after all that I got the alarm again.
Today I noticed that it was the #1 cylinder (Top left as looking at the motor) that got hot. The temp sensor shows signs of getting too hot. The grease got cooked around it and the jacket on the wires is visibly heat damaged right as the enter the sensor, but I doubt the conductors inside got that damaged.
Would a bad sensor be causing my issues or did some serious damage take place and my motor is not cooling properly and causing the alarm?
The Bat signal out for a Yamaha Guru!!!