Radiator or Thermostat???

[Tone]

Radiator - make sure the fins are clean front and rear - clean with garden hose from the inside out. If it started after the flush, then it is probably clogged inside and will need to be cleaned or replaced.

Is the coolant / water mix correct? You might want to drain and refill according to instructions on container.

[crager34]

Coolant/Water mix is correct (recently checked). This happend once before, then I flushed/filled it and it worked fine ( a year ago) and now it's happening again, so.... gonna call it a radiator and get it fixed.

Thanks Tone