Been noticing this about a week now.

At idle, after the car's warmed up to operating temp, when I sit at idle, I'll get a random sputter/stutter/whatever. If the radio's on, I can feel it. The tach appears to drop <50rpm (yes, fifty) and the car still runs just fine.

Other info which may or may not be relavent:

CELs = 24, 31, 31 (I have a DIY Dremel port and polish on the TB and intake runners, sketchy roll over valve on my gas tank, and likely need some new hose under the hood)

Car generally will idle about 950. Hangs when you come off the highway about 1500. Settles down once stopped. Sometimes will hunt between 800-1100rpm.

Any advice? The plug wires are about 5 months old, the plugs have <3k mi on them from rebuild. Check the plugs for fouling? With the new CR, maybe the ECUs running richer than usual and fouling the, out?

Danke shon!

How old is the TPS in there? The slow to return (hanging) sounds like a TPS problem. You also have a CEL 24.

TPS is OEM. Worked fine before. Planning on loosening it up and retightening.

EDIT: Just realized I meant to put in CEL 25. Target idle not reached. So maybe I need some new hose under the hood and I fix em all at once? Hmmm....

More input on the sputters?

I'd just check the hoses over (or break down and spend $2 on vac hoses) but the hanging idle/low idle/high idle is usually TPS related. I'm not saying all the time, but I have had my sister's and mine go out. Neither of us got CEL's for it either.

Thanks! Looks like I need to score me som ho's dis weekend. :P