Ive noticed since i bought my vectra 1.9cdti that the temperature gauge takes a while to get above 70 degrees.
This morning jumped in the car and started my drive to work, when i put the heaters on after about 5 minutes there was no hot air coming out all the way to work, which is a 45 mile trip, also the temperature gauge didnt move at all.
So my question is this, is it definately the thermostat that will need replacing or is their anything else i should look for 1st. Also if it is the thermostat ive heard that it can be a bit of a pain of a job. Also how much roughly will one cost me