Adam small
New Member
- Aug 9, 2020
- 14
- Boat Info
- 1998 230 signature
- Engines
- 5.0l merc
I have a 98 230 select with a 5.0 merc and bravo one 2nd gen outdrive . When I’m crushing 3k or under no issues as soon as I raise rpms the temp slowly drops from 170 down to 40 or 50 then and alarm goes off . As I let it idle or drive slow the temp increases back to normal . It appears there is a second pump impeller in the outdrive , is it possible that it can’t keep up with water pump on engine ? Bad thermostat or gasket . Any ideas please ? Motor only has 210 hrs on it and manifolds and risers only 3 years old and it runs great