I have a toyota noah 2003 model 1AZ engine with overheating problem causing massive damage to its cylinder head gasket with a new one being installed every three days.my mechanic suggests that we resize the cylinder head any comment welcomed

My noah 2003 keeps showing the exaust sign and Eco on the dash board screan, what could be the problem?

This should have been done the first time. When an engine overheats and blows a gasket the head should always be checked out and resurfaced flat. A .005" warpage in a head can and will blow gaskets. There could also be a hidden crack that the mechanic can't see.

Have the same problem and was sorted. its a wiring problem I.e. lose cables in the revolution circuit sensor.