[troyg3]

I just purchased a used 2013 Z6 EX. I was out riding last weekend and after about 30-45 mins of normal riding, the temp gauge would go into the red. I stopped and checked the coolant level and that was fine. Also at that time the Malfunction light came on (not blinking, just solid on) but went off once the engine cooled down. Any advise on what to check first? When I bought it, it was a little dirty so I am thinking the radiator might be plugged up so I am going to get that cleaned out good and try again. Any other ideas suggestions would be appreciated. Thanks!

[NMKawierider]

On CFMs prior to 2016 with a heating problem always check the thermoswitch first. Most all of them have gone bad at one time or another. This controls the fan and is on the radiator. After that check the thermostat and flow rate....and actual coolant level in the radiator. It must be full to the very top.

[troyg3]

On CFMs prior to 2016 with a heating problem always check the thermoswitch first. Most all of them have gone bad at one time or another. This controls the fan and is on the radiator. After that check the thermostat and flow rate....and actual coolant level in the radiator. It must be full to the very top.

Thanks for the reply. The fan actually does seem to run when needed, so I kind of ruled out the switch. Not even sure how to check the flow rate, but that seems like a good plan so i'll have to look into that.

[dragonmac]

The coolant fan should kick in with the third bar on the coolant gauge ... does it sound fast or high speed ? if not check for poor continuity on the power wire or a poor ground on the opposite wire... if only getting 8-10 volts it will still kick in but not with enough speed to cool...just a place to look

[troyg3]

The coolant fan should kick in with the third bar on the coolant gauge ... does it sound fast or high speed ? if not check for poor continuity on the power wire or a poor ground on the opposite wire... if only getting 8-10 volts it will still kick in but not with enough speed to cool...just a place to look

Thanks, I will test it to see when it kicks in and also the continuity.

[Cosmosdan]

It's not easy to get all that dirt out between the fins, might just use a flashlight and check to be sure.

[gfmoto]

I would say it is the Thermoswitch, I have been through 3 so far and now that it is getting nice outside I will be installing an override switch.

[troyg3]

I would say it is the Thermoswitch, I have been through 3 so far and now that it is getting nice outside I will be installing an override switch.

Do you have a resource for the thermoswitch?

[NMKawierider]

I would say it is the Thermoswitch, I have been through 3 so far and now that it is getting nice outside I will be installing an override switch.

Do you have a resource for the thermoswitch?

I get my stuff from Alpha-Sports.

[troyg3]

I would say it is the Thermoswitch, I have been through 3 so far and now that it is getting nice outside I will be installing an override switch.

Do you have a resource for the thermoswitch?

I get my stuff from Alpha-Sports.

Perfect, thanks!

[gfmoto]

I got mine from my dealer so, I can only say that its a super easy fix when you get the part.
Kibuks Cycle in Kittaning Pa.

[troyg3]

Well the radiator is clean and full of coolent. I have replaced the thermoswitch, and it is stll overheating. Has anyone replaced a thermostat, and how difficult was that? That is the only other thing I can think of. I feel like if it was the water pump it would overheat faster than it does. I seem to get about 30-45 minutes or riding before the temp gauge go into the red. When it happened this time I took the temp of the radiator with a temp gun and it was at about 220 F. Any other suggestions of other possibilities?

[NMKawierider]

I would pull the thermostat. I'll bet it's bad or just stuck. On the 800s it up by the head on a housing that...looks like a thermostat housing..lol

[Cosmosdan]

Your fan is coming on? I pull the rad cap off and look down in there to see if the pump is working. Should see it moving when you rev the engine.

[troyg3]

Your fan is coming on? I pull the rad cap off and look down in there to see if the pump is working. Should see it moving when you rev the engine.

Yes, the fan is coming on when it should. I will check out the rad to see if I notice the water pump working.