CantSTOP

I did some researching and the closest thing to my problem is a clogged/broken IACV or what sounds like it. Car is a 96 KA. Motor is completely stock.

Car turns on perfectly fine. I warm it up, after I drive it for a bit and come to a stop it'll drop idle and die. I'll start it up easy but it'll drop idle again and die, sometimes I get lucky and it starts up and runs normal. And when I'm on the freeway, I'll cruise at 70ish and it will start to bog and lose power for a couple seconds and then I can feel normal power kicking back in. Runs fine after that. But some days I get really lucky and don't have to deal with this stalling, other days its a pita T_T I've read to seafoam it, so it can stop the clogging.

I had a check engine for the knock sensor and I thought it was causing this problem. Bought a new one and replaced it and light immediately went away. After about 4 days later came back on but I haven't had time to check it yet.

Thanks for any help and sorry if this is a repost.

Another thing is, can the IACV be malfunctioning from a previous aftermarket header install? The EGR pipe was blocked off because it couldn't reach the header.

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