Contour Enthusiasts Group Archives Forums General Troubleshooting low idle at stop

Hi guys
I did a TH-fix as described by Ray's post aout a month ago.( i made a hole about 1/4")
Once in a while when i stop at a traffic light the rpm goes way down to 400 range and sputters like it's gonna die on me. Once i give some gas it revives and fine for a while.
First time i thought it was due to the cold weather, but it did again on a last couple of days (temperature reading on my Donnelly was 54degrees outside)
Any opinion or similar experience?
Thanks

98 CSVT
bone stock except Donnelly mirror and K&N drop in filter.

You may need a slightly larger hole in the TH plug. Before experimenting with the different sizes though, try cleaning the throttle body and the IAC followed up by pulling fuses 4 & 11 for at least 5 minutes to reset the adaptive strategy. The TH cure is very sensitive to hole size. Some have two plugs and change them according to the season, with a larger hole for cold weather. I'm betting that a clean throttle body will make the difference you need though.