New to me 2016 G21 water temp not working. Nonworking blower. Engine temp issue??

[fpjl]

New to me 2016 G21 with 270 hrs. Water temp reads over 100 degrees F. Yesterday varied from 102-106. Also received with blower that doesn't work and getting message that fuse tripped. So getting new blower and hope that will fix that but didn't know if anyone had ideas about how to troubleshoot the water temperature issue. Air works. Depth works. And last, when first put in water and run about 1/2 mile overheated. Just serviced with change impeller etc. Temp around 220. Turned off. Floated. Temp back down. In middle of big lake so turned back on and it seemed to be fine with temp staying in normal range for the next few miles. Seems fine now but haven't gone over about 20. Thoughts??

[DW SD]

I would replace the thermostat. Sounds like it might have stuck open then closed. I believe you have closed cooling so that does make thermostat issue less likely than an open cooling system.
Sorry. I realize a mixed message.
Might be a whacky temp sender throwing computer for a loop too. An infrared temp gun could be used to compare readout to thermostat housing.

I'd be very careful. Don't want to overheat an expensive engine. 220F shouldn't be called overheating. At least the automotive LS engines run in that range every day. You just don't want to warp a head or blow a head gasket.


Sent from my iPhone using PLT Nautique

[NautiqueJeff]

Some 2016 boats had bad thermostats installed at the factory. Mine was one of them. They fail and stick closed. I would replace it right away. Also make sure the belt recall was completed on the boat.

[homer12]

Are you talking about lake temp when you say water temp or engine water temp? I have a 2004 SV211 and my lake temp reading is waaayyy off. Not sure what to do about that unless it's just the temp probe.

[fpjl]

Many thanks for the above advice. Actually 2 different things. The lake water temperature is the one that is way off. Reads from 102-106. But the boat also overheated the first time I used it. The second and last time I went out the engine was fine. The lake water temperature is still way off.

[fpjl]

Any idea how to trouble shoot the innacurate lake water temperature on my 2016 G21? Any idea where the probe is? Is in incorporated into the depth finder unit which is not a through hull unit? Air temp and depth readings are fine. My puck is an airmap smart depth/ temp unit model number 20-635-01 which I can't find on the internet.

[azeus17]

Isn't this 2016 still under warranty? Why don't you just take it in?

[fpjl]

Delivered from out of state. As second owner my warranty covers parts not labor. Thanks for any help.

[Jeb1974]

Delivered from out of state. As second owner my warranty covers parts not labor. Thanks for any help.

I believe that starting in 2016 the warranty transfer includes parts and labor. Prior to that it was just parts.

[fpjl]

Interesting.
Many thanks