Engine Temp Vr6 1999

[stecoogan]

Hi I have recently bought a Vr6. I am using is for motorway driving from Dubai to Abu Dhabi. I have noticed that the temp gauge has started moving from the middle downwards then back up again. Is this normal? This will happen a couple of times every journey (60 miles). Is doesn't go into the red just middle to bottom.
I have checked the coolant and that is full.

Any help would be appreciated.

Regards

ste

[stecoogan]

Ps the temp doesnt go above 190.

[herby0001]

Sounds like a failed water pump, which means coolant is not circulating correctly. This could account the the erratic change in temperature. Does the car to overheat too? A faulty thermostat could be preventing proper circulation too. Could also be a suspect coolant temperature sender too.A fault code should be stored for that one.

[stecoogan]

thanks Herby.
The car doesn't seem to overheat. It just goes between 190 (middle of gauge) downward then back up again.

[v6dub]

i would start with, the temp sensor, on a vr6 engine thay are located at the frount right hand side, there are two or three sensors in a line, a blue one a yellow and a white one, have the car scaned find which one is playing up and change it, only cost about £24, so very cheap