Car idles rough and stalls at stops-Please help

[jdager]

Hey all,This is my first post and I am having a lot of problems. I have a 1998 nissan 200sx 1.6L that I just got and I am having problems with it dieing at stoplights. It will idle really low and almost die and sometimes it will. I have read a lot of posts and have herd hundreds of possibilities of what it could be. I have had it at a shop for two days solid and they found nothing. They said that it was the IACV and so I replaced that with no benefits. They said there were no vaccume leaks but I swear I hear hissing under the hood. I have herd to check cat, intake gasket, MAF, TB, and a lot of other things. Has a fresh tune up on it. I have read tons of posts on this exact problem in these cars but no one seems to come up with a difinitive answer. Please help before I have to throw hundreds more dollars at this.Thanks,Jim Dager

[nametakennow]

It almost has to be an air issue. Follow that hiss and check the vac system yourself, mechanics can be lazy.

[jdager]

I think it is coming from that tube that makes two 90 degree bends and I have herd that these can be a problem. What is the best way to get to this hose to get it loose and can I go to somewhere lile orielies and get that hose?Thanks

[nametakennow]

I need a better description. Where is it in the car? A picture would help if possible.