2.0 idling between 1200 to 1800 rpm

[sefton]

The butterfly is fully closed.  What puzzles me is that the car is not only idling very fast, it is revving up and down between 1200 and 1800. Any ideas what may cause this variation?

[Auto Addict]

When that happened to a friend of mine's 2.0, the throttle cable needed adjusting.

[sefton]

Thanks for all your help Guys. I had another look at the butterfly and it was indeed slightly open. The throttle cable was slack, so a slight adjustment of the stop screw cured the fast tickover. It now drives beautifully now that all the breathers are cleaned and it's had a service. I don't mind treating it to some new front tyres now!
THANKS AGAIN TO EVERYONE FOR YOUR HELP.
Alan.

[Marks DTM Calib]

Good news, its had the old mechanics bodge at some point then......

[Matchless]

Good news, its had the old mechanics bodge at some point then......

No, its had the crap mechanics bodge, I know some excellent old mechanics.