wheni start my civic its radiator fan fan keeps on after the last service .it keeps on in the morning also when i switch on my car.what is the problem with it is it okay .
If it is not been made direct by any alteration then its not ok,you should get it checked because automatically/stock it has to be switch on when needed and turn off after that.
sounds like a loose grip on the thermostat
it is possible that the temp sensor connection is broken and as it is a bubbled input so the fans comes on in case of no connection, you might need to fix a wire/connector to resolve the issue.
problem solved i was having a green colour switch under my steering when i checked the switch the two wires red and black are connecting each other and giving a spark when i checked the switch it was also borken.so bought a new one now every thing is fyn
thnx for help brothers