Posted by Ian McCulloch on June 23, 2007, 5:50 pm, in reply to "Ford Focus 1.6 2001"
I only ever came across this once about 3 years ago on a Focus that wouldn't sit in the zone. From memory it was switching the A/C that "cured" it. Cant remember if it was on or off though. Possibly another solution. Customer didn't want it investigated anyway, so didn't get to spend anymore time on it.