MAZDA B2600 RALENTI ALTO

Hello forum colleagues, I have a problem with a Mazda B2600 gasoline truck, I turn on it and the speed remains in 1000RPM, I disconnect the IAC valve and the RPM fall to 600 approx,
check the ECT, the fan clutch, and still do not find the problem, someone can guide me in the cause of this fault?, I appreciate your collaboration beforehand.

Hello, you should check the empty when any is disconnected or they have air inlet the engine is accelerated, also clean the IAC and check the air filter.

greetings.

It is not so strange what you generally say the RPM are handled in the range of 750 or 800 to 950 or 1000, now you can have a false air input but I do not believe it, IAC may be stuck or this dirty checks the body of the butterfly, but it is not serious, as the IAC is done, it is commanded with the computer, utility signs of the speed sensor and the temperature sensor.

You must also check the ECT

Thanks for your answers, I review and tell you how it went,