you have vacuum leaks, fix those and your idle will improve AND your defroster vents will work again.

Don't forget to check the vacuum hoses under the dash.

ALTERNATELY, plug off the vacuum hose that goes under the dash, and use a cheap pull spring to do the job that vacuum previously did, under your dash. It's what I did, anyhow. <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />