HELP leon turbo with issues

[leebo20v]

hi everyone im having a few issues with my 2001 leon. start the car as normal and run up to temperature as you do, however the car boosts up fine but when coming to idle the engine revs fluctuat from between 750rpm and 1200rpm if anyone has experienced this any kind of help would be much appreciated thanks

 

[kineticz]

Sounds like coolant temp sensor.

 

[leebo20v]

thanks mate ill give that a try and post it up if cures the problem thanks