HEATER PROBLEM IN MONTERO 2.8 TD YEAR 98

I have a problem with this 4M40 engine, the heater in 3 months, they are original are Bosch but 3 games are already loaded. They are lit after starting in cold Asta K heats a couple of minutes. have if someone can help me very much

My good friend. I have a problem something like that I burn wing 1 and the next week another game, when they check they are heating until the engine arrived at the temperature of half and probate with another vehicle of them and it is normal is Mazda Bt 50 2008. The solution putting its thermostat and the original 4, cost as 115 dollars. Universal candles, luck ..

Thanks colleague !! I already imagined k could be solved with the originals but how do you are worth me.