IAC Chevrolet Malibu Valve problem 1998 3.1

Good afternoon yesterday my car presented the following fault: when trying to turn it on but it goes out, I have to keep the accelerator pressured but when it releases it, I began to check it and I do not know why the first thing that check was the IAC acceleration valve when disassembling it I noticed that the vasto was very open. The office again presented the problem and carried out the same procedure and the car started perfectly. My question is the following the IAC valve no longer serves or the problem is another and causes the valve vastish to stay open, should I mention that the valve changed it in December, for the same reason it surprised me that I would fail, that I should check before buying another valve?
Greetings and I await your help.

It could be that I do not regulate correctly this can be for any of the signs that reach you of the Compu due to failure of any of the sensors, whether it is temperature, oxygen or tps, if you want to get out of the problem, the IAC is easily calibrated as it is previously, but you leave it disconnected while to prove that it is by bad signal and not by the problem of the IAC threads.

Albertoreye I think I have already told you on an occasion that you don't put those links where they sell here we help without interest.