4.4 V8 Temp gauge off the red help!

[mattwall101]

I have just changed the water pump on my 4.4 v8 2002 range rover and now the temp gauge goes straight off the red even when cold any ideas guys
Thanks

 

[jdennington]

Sounds like an air lock, check for cold spots along the cooling system pipes and tempreture difference across the radiator top and bottom.

 

[mattwall101]

Sounds like an air lock, check for cold spots along the cooling system pipes and tempreture difference across the radiator top and bottom.

Even when i disconnect the sensor it still stays the same off the gauge?

 

[gavbriggs]

guage needs a slap??? try tapping it???

 

[bwarb]

Even when i disconnect the sensor it still stays the same off the gauge?

Does it do all of this before you've started the engine ?