Hello All,

After 2 months off the road, many painstaking hours and a fortune I got the Williams back on the road today. A new fan switch sensor saw the fan cutting in and out as expected, though I noticed a strange cooling problem whilst driving.

The coolant temperature is running on the high side. between the second and third needle position during standard running (today wasn't hot either) and the needle could almost be visibly seen to be moving between this halfway and third indicator position. As far as I understood it, this represents the temperature in which the fans cut in? Though I could not hear it running with the window down. The car did not smell hot either!

Any theories on why the needle movement is so transient? I am thinking an air-lock. I have just had the head gasket replaced with a new thermostat.

Any suggestions would help!

Thanks

Chris