G60 temp gauge not working properly on 2 clusters ?

[jaxone 10]

Hello.

 

I recently bought a Golf Mk2 with a G60 engine in it and I have a few small problems among which this strange one with the temp gauge.

 

The temperature gauge will never go more than 1/4 of the temperature scale.

First I thought it is my gauge in the cluster and I replaced the whole cluster with a Figifiz cluster.

On the new cluster the same, the temp will go at max 25% of the scale.

 

Then I replaced the sensors, both the black and blue one ... same thing.

I took 2 other sensors from another engine .. still the same issue.

 

Isn't the black sensor the one that sends the temp reading to the cluster ?

 

So with 2 sets of sensors changed, two different clusters (one analog and one digital) and the damn temp gauge still not working properly what else could be wrong ?

 

Can be a relay ?

Can be a bad earth somewhere ?

Any other known issues ?

 

Thank you in advance.

[jaxone 10]

Replaced thermostat, everything ok now regarding the temp gauge.