Aloha. Serial No. on this engine is 0T148359.
The symptom is that after the engine is warm, slowing to idle will often cause the alarm. Sometimes I have to restart because the safety engages and engine will only idle, other times I can hit the throttle. The alarm rarely goes off at cruising rpm, 4600-5200, but it has once or twice. I do not have a temp guage. 18.5' bass boat has the 4-light instrument cluster, an rpm and water pressure gauges.
Have been getting this high temp alarm for awhile, new impellers don't seem to make any difference. I installed one and the shop I took it to installed one. Another shop replaced the alarm module (there was no alarm when turning on key, they fixed that, but I still got the high temp alarm).
Water pressure is much lower at idle, barely registers on gauge. At 4800 rpm, the pressure is near 15 psi. Water is circulating at idle and at higher rpm, there is always steady/strong stream at the outlet.
Today I pulled the 2 thermostats, they look OK but I'll replace. I want to check out/replace the poppet and assembly, but there's a lot of stuff in the way. Do you normally cut and splice the wires for the trim switch? It's too big to fit back through the cowl opening. What else do I need to watch out for in terms of the electrical components on that side?
I've read the posts regarding the poppett, I should be ok replacing it. What else can I check? Thanks.
The symptom is that after the engine is warm, slowing to idle will often cause the alarm. Sometimes I have to restart because the safety engages and engine will only idle, other times I can hit the throttle. The alarm rarely goes off at cruising rpm, 4600-5200, but it has once or twice. I do not have a temp guage. 18.5' bass boat has the 4-light instrument cluster, an rpm and water pressure gauges.
Have been getting this high temp alarm for awhile, new impellers don't seem to make any difference. I installed one and the shop I took it to installed one. Another shop replaced the alarm module (there was no alarm when turning on key, they fixed that, but I still got the high temp alarm).
Water pressure is much lower at idle, barely registers on gauge. At 4800 rpm, the pressure is near 15 psi. Water is circulating at idle and at higher rpm, there is always steady/strong stream at the outlet.
Today I pulled the 2 thermostats, they look OK but I'll replace. I want to check out/replace the poppet and assembly, but there's a lot of stuff in the way. Do you normally cut and splice the wires for the trim switch? It's too big to fit back through the cowl opening. What else do I need to watch out for in terms of the electrical components on that side?
I've read the posts regarding the poppett, I should be ok replacing it. What else can I check? Thanks.
