I know this subject has been kicked around alot, and ive read almost all postings and articles on idle problems, but I still cant anything relevant to my problem. I had the intake manifold off to clean the IAC and put in a shifter bushing. While I was back there I checked all vacuum lines and put hose clamps on ones that needed it. Long story short, when I replaced the manifold, I forgot to put a vacuum line on the FPR, so tore it off again, and put the line on. Now when I start it in the mornings, it revs to 1000, drops to 500, then almost to nothign, and I have to gas it to not stall out.:x Once it gets warmed up, it revs to about 1400 and stays there. For the life of me I cannot figure this one out. Its driving me nuts. I have taken off, cleaned and reconnected almost every relevant line and sensor visible near the manifold. No codes are thrown and no loss of power that I can see. Ive also propane tested almost every vacuum line to no avail. If somebody can point me to something im not seeing, let me know.