It only starts when it has low temperature

Hello, I am Raul, I have a problem and above all a very big doubt I have a Focus 1.8 TDCI year 1999 guide the case is that I will buy it four months ago I changed the Vielas because one breaks one, it would make a month when I was driving with the car if it passed 3000 revolution Piece that goes on the dashboard and that they had to ask the Ford and I am still waiting for it, the case is that now the car starts in cold perfectly, circle with the normally but if I stop the engine and the engine temperature it is by the norm half or a little less I could get out of doubt that I have not been able to tell me exactly what it is in the workshop but they say it can be the injection bomb and have scared me a lot of
greetings and thanks

They have connected you. the computer? In some cases it is the wave crankshaft sensor that regulates the fuel in the injection pump.

Tomorrow I have time in the Ford they will do the diagnosis, I will tell you what they have told me, the one who attended me says that it looks like a sensor
thank you very much
greetings Raul

Hello AI, something similar happened to a Toyota, Naftero, the problem was the engine temperature sensor, which always indicated to the ECU as the engine was cold.

Greetings Raul, according to what you say seems like what friend Nizome indicates a damaged or false temperature sensor, something similar happened to my Isuzu truck and was the terminal of the defective temperature sensor (use two, one of the temperature clock and another of the ECU that was the defective), try to step on the accelerator almost thorough Being the engine cold), this is a measure while solving the sensor. Tell us how it went, luck.