Water Temp going down on throttle

[Duduglanza]

My glanza started sometimes doin this strange thing..

While I press on throttle the water temp gauge goes down to Cold. As soom as i release the throttle it goes back to normal :/

The more i press the more it goes down? Any ideas?

[akyakapotter]

Change out the thermostat for a new one bud

[Duduglanza]

It was changed about a year ago.. it think it might be something electrical

[gorganl2000]

check your temperature sensor that sends the signal to the ecu....i think its the "gray triangular" sensor in the thermostat housing under the distributor

did you run a diagnostic?....any code?

[patman]

I believe this is an electrical thing aswell, my water temp gauge in the cluster (mk 2 GT) likes to sometimes bounce up and down, but my water temp gauge I done myself reads well and doesn't move stays with the temps etc

[Arnold]

It was changed about a year ago.. it think it might be something electrical

Just because it was changed, doesn't mean it won't be the problem.

Does the temperature stay higher if you leave the air vents on recirculate?

[Duduglanza]

Temp never goes up the normal 90/93. Will check thermostat aswell