mario_mueller1
Citan diesel engine overheating problem solved
Summary of the thread
A 2014 Mercedes Citan diesel was experiencing severe engine overheating, suspected to be due to a malfunctioning electric fan that was barely spinning. The issue was identified as a potential problem with the fan's electrical connection, possibly a dodgy cable or plug. After taking the vehicle to a workshop, the problem was confirmed to be a corroded connector on the electric fan motor. Replacing the connector resolved the overheating issue, restoring the engine's cooling efficiency.
Did this summary help you solve your problem?
4 comment(s)
mario_mueller1 (community.author)
Thanks for the quick reply! When you say 'fan clutch', do you mean where the electric motor plugs into the fan assembly? And yeah, it's spinning weakly, not like it used to. Barely moves any air across the radiator fan, which is why I'm so worried about the engine cooling.
konstantinwagner1
Exactly, where the motor connects to the fan assembly. If it's weak and not completely dead, it's likely a connection issue or a failing electric motor, rather than the entire fan clutch mechanism itself. Honestly, diagnosing electrical gremlins can be a pain. Might be worth getting it checked at a workshop. Could save you a lot of frustration.
mario_mueller1 (community.author)
You were spot on! Took it to a workshop, and it turned out to be a corroded connector on the electric fan motor. New connector and labor cost me 95€. Engine's running cool as a cucumber now. Thanks a million for pointing me in the right direction!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
MERCEDES
community_crosslink_rmh_model
CITAN
konstantinwagner1
Sounds familiar. I have a Citan too, and had a similar issue with the radiator fan. Check the electric motor connection to the fan clutch. A faulty connection there can definitely cause the electric fan to not operate properly and lead to overheating. Is the electric fan not working at all, or is it just weak?