Hi all
I don't know if the car has always done this but only noticed it today.
When going along in 4th and 5th at about 50 mph or over if I let off the throttle and dip the clutch the revs will stay up around 2000-2500rpm?
Is this normal or do I have a problem?
At lower speeds and revs it behaves normally.
Could it be an airless or speed sensor causing it to do this?

Thanks for any help in advance.

Aaron