Harley Davidson V-Rod Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Hi All
can someone PLEASE help, i have a 2015 V rob Muscle, its overheating the fan is not kicking in when the engine gets hot grrrrr

The Fan does come on when the bike is off and runs for a min when hot, has anyone else experienced this or know what the fault could be?

I was thinking i could add a manual fan switch but cant find the correct wire.

Thanks in advance

Den
 

·
Premium Member
Joined
·
6,248 Posts
...
can someone PLEASE help, i have a 2015 V rob Muscle, its overheating the fan is not kicking in when the engine gets hot grrrrr

The Fan does come on when the bike is off and runs for a min when hot, has anyone else experienced this or know what the fault could be?

I was thinking i could add a manual fan switch but cant find the correct wire.
...
How do you know it's overheating?

Is the coolant temperature warning light on when you notice this?

The ECM should activate the fan relay when the coolant temperature reaches ≈ 100 °C (212 °F) ± 3 °C (5 °F) and then shuts it down when the coolant temperature reaches ≈ 95 °C (203 °F). The coolant temperature warning light is turned on if the temperature reaches ≈ 110 ° C (230 °F). If the ignition is turned off and the coolant temperature is still above the "trigger-on" point, the ECM will activate the fan relay for up to one minute and then shut it off.

The same circuit is used when the engine is off as when the engine is running so I can't imagine why it would only work with the engine off. It could be that the coolant temperature is near the trigger point while the engine is running and rises due to "heat soak" after the engine is turned off.

You should check your coolant level and bleed the system to remove any air bubbles. The bleed port is in the inboard coolant return pipe found by removing a rubber plug from the bottom of the air filter housing. After removing the bleed port screw, open the pressure relief cap and add coolant until it reaches the top of the bleed port and then reinstall the bleed port screw (torque to 9 to 11 Nm = 80 to 97 in·lbs) and the pressure relief cap.
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top