ST205 Mechanical help needed! Car stalls Options

[TEAMFaint]

I am by no means mechanically inclined at all however I would like to try and diagnosis this with some of
your guys` help instead of having to take it into my Toyota dealer.
Here's my situation:

When the car first fires up, it idles nicely at 1000 rpm, smooth rpms all over, drops nicely back down to 1000 rpm with ease.
Now the cars engine is warmed up, and now the trouble hits.
Car still revs up fine but starts to dive down to the 800 mark and getting rough, in some cases when I am hitting the brakes abruptly or I press the clutch in for a neutral coast, the car will actually stall out and drop from whatever RPM I am going, (typically 3000) straight down to zero with no hesitation.

I am at a loss as to where to start, ideas my friends? Need some helpful insight from some experienced members with the 3SGTE world.

-Kellen.

[pipes]

You can check if its your iac by letting the car warm up all the way...because once the car is warm it no longer need the iac....now you can drive around and when u have to stop keep your foot on the gas and do that till the car is warm....if it stops stalling there goes your problem

[TEAMFaint]

You can check if its your iac by letting the car warm up all the way...because once the car is warm it no longer need the iac....now you can drive around and when u have to stop keep your foot on the gas and do that till the car is warm....if it stops stalling there goes your problem

So what youre saying is once my car is warmed up, when im braking keep my foot on the gas to keep the revs up and if the car doesnt stall then its my IAC?
Because this is indeed what I have to do to ensure the car does not stall.


Ps. on a side note, my car is sitting at 96,000 kms with original timing belt/water pump//wires/cap/rotor
Would any of this affect the car as far as the symptom?