Rough start-up

[DanGTP]

When I start the car the initial start-up is very rough. It starts instantly, like always, but almost immediately drops down to 500-600 RPM and sounds like it's starved for fuel for just a second or two. If I touch the gas while this is happening, it immediately revs and smooths out, then settles down where it should (~800-1000 depending on temp). When at normal idle, my IAC counts are 90-100. I know that I can adjust the start-up correction tables, but I don't know exactly what and by how much to change. The major mods are in my sig.

[BwolfGT]

Sound like a vac leak to me. This is EXACTLY what mine was doing when I had a huge one.

[DanGTP]

No obvious vac leaks to be found... I do have a slight exhaust leak at my #1 at the manifold gasket.

When I went to leave from lunch today, I had to crank it for a second or so before it would fire off. It smelled strongly of fuel after I got it started. Maybe my start-up is too rich? That's never happened before.

[backinblackgtp]

mine does the same exact thing, only this is, when i start it up in the morning it never gives me a problem, only when im going store to store etc. If you find out what it is let me know

[DanGTP]

It still does it every once-in-a-while. Mostly when it's cold out and the engine is cool but not completely cold yet.

[backinblackgtp]

mines the opposite, when its 10 degrees out it starts right up, but after running it for a while and than shutting it off and than on, it'll sound like its not getting enough gas.

[DanGTP]

^ That's pretty much what I was trying to say. lol