Setting the cat
amongst the pigeons
Join Date: Sep 2008
Location: United Kingdom
JTD without Heating
My GT JTDm has suddenly developed sporadic heating. The air con and blowers work fine, but there seems to be a lack of heat. It sometimes comes through for a few minutes, but disappears again.
I think my thermostat was past it's best as the temperature gauge used to display 80° when cruising going up to 90° when under load, but now it shows a steady 90° all the time. Coolant level is fine and hasn't dropped.
Does anyone have any ideas why this might be the case? I thought that maybe my water pump could be the cause, but I'd expect the car to overheat if it had lost it's impeller.