low idle, bad vibration

[cucurumbe]

OK I think my idle is on the low end. At a stop she shakes pretty bad until I level out the throttle. I'm pretty sure I already have to replace my fast idle valve. Could this be the problem or should I be looking for something else?

[spiffyguido]

Have you completed the steps suggested in the manual to set the idle properly? I'd start there. The idle itself might just be set low.

[cucurumbe]

Not yet. I read in the manual that it most likely is a sign of some other problem and I didn't want to just raise the idle without addressing it.

[spiffyguido]

Did this problem just show up, or was something else changed?

The fast idle valve could be causing problems. It might be stuck in one position. Do you get a bouncing idle as well?