Stratus 2000 Mexican Case

Hello, someone could help me ...?, I have a 2000 model that has been cracked, they have reviewed several mechanics and have not found the problem, when I start in cold it works perfectly but when the temperature reaches the middle of the indicator it loses strength and begins to rattle, I have led in this regard and what I have found is that they have a detonation sensor that is the one that controls that but I would like to know if I need to change it or the problem The mechanics tell me that it is not the sensor, the truth is no longer what to think, it is worth mentioning that the engine I have taken to check and they tell me that it is new because of the compression it has, so the problem does not seem to be the engine's wear and it has logic because I take care of the car quite a lot and I am always aware of any noise, in addition to the fact that I do the oil change and the tuning.

Note, already changed the cables of the spark plugs and spark plugs twice, I even bought some charcy spark plugs that told me that they came out very good and nothing, the car is still the same.

Greetings and I hope you can help me. I will appreciate your answers with a copy to this email:

Hello, you have not noticed if you emit black smoke for the escape when it fails. Do not thick if you already put the scanner

The engine rattle can be because of the fuel you use, it would be good for you to use an additive in the fuel tank and try if the problem is reduced, the dotonation sensor only serves when there is a noise in the engine like the one you have sends the signal to the computer and tells you that there is a noise in the engine and take the necessary measurements so that the engine is not damaged.

Sorry for not commenting that but yes, they have already done the test for scanner to my car and according to what this tes throws is that the car is perfect and has no problems.

I already check the smoke and do not throw anything, the only thing that I have noticed and that I tell the mechanics that checked it was that when the car has a good time to be working on the heat that feels in the engine is very strong, but I already checked an electric and tells me that the entire cooling system is fine, in fact they have already cleaned the radiator and I have put it antifreeze and I reviewed the bulb, I made the commentary to him. I am very hot, the temperature meter was always in the first 1/4 of the indicator and now it is always in 1/2, that is, it went up 1/4 more but the electric said that 1/2 was normal and that those cars are always very hot, the case is that even when I am inside the car, I feel that the heat reaches me to my feet after the car I have brought it a good time, I do not know if this also has something to do.

Greetings.

Note, I have always used Premium gasoline.