The Annoying IACV problem

Hy everyone! I am new here and in advance please forgive my sometimes bad english and dumb questions as i am from hungary.

So to take the horse head on. I own a 214 Si made in 99 which is making me slowly go bald since january 2014. It had a lot of annoying , time and money consuming problems and now has started to have a bad cold.

The latest and most important problem is that when the car is started cold ( and i do mean cold, it is about -10 -- -15 degrees celsius right now here) it idles fine, purring like a kitten with a sore throat because of the missing rear muffler and sitting at 1100-1150. This would be okay still but if i lightly touch the accelerator it starts to cough: misfires, erratic rpms - between 500 and 1300. And if i push it deeper it stabilizes at around 2000 rpms. It is really annoying to go in low gears with high rpms or else the car jiggles me around the cockpit.If it gets to normal temperatures the misfires are gone but the car still shudders in every gear at low rpms. Before winter i was able to go easely in 5th gear at speed from 30 km/h to 90 km/h without any shudders.

So heres what i did so far:

-tiny holes in the muffler repaired with gun gum

-new spark plugs

-new distributor and dist cap

-new h.t. leads

-new fuel filter

-oil change

-the tps sensor was acting up too and the little internal spring was broken, bought second hand, tested it with multimeter checks out fine so changed that one

-cleaned the crank position sensor( had a little ball of metal shawings on it)

-new img



And my very last idea seems to go down the drain too. I discovered that the main problem was that the engine was getting too much air. Started looking around and the the little male tube connector going to the evap canister was broken off so i plugged it, didnt fix the problem but no air was going in there.

After this and some forgotten tube i discovered that no matter how i play with the throttle the iacv does not lock. I mean that if i disconnect the air tube from the butterfly going to the iacv i can feel vacuum even at almost full throttle. So looked around ( and there are not really that much scrapped rovers here in hungary ) and found a second hand iacv. I tried measuring the other one according to the autodata program ( connecting one lead to the middle pin on the engine and trying any other pin but i am not getting any resistance but it should be 9,7 kohms) and it feels like a dud. Tried the new one and it ticks but it does not move. Tried to drain the current by removing the battery from the circuit for a night but no luck.

I am really hoping that someone can help me with this as i am starting to get really annoyed with this car and i cant really get rid of it as an almost identical one in better condition and more extras goes for about 620 gbp now and i bought this moneypot a year ago for 1200 gbp worth money.

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