Throttle Body Spring Broke

I had to get a new spring too. Went the "multipack" route , they suck. They don't have enough tension, the gas pedal is real ez to push and the revs hang some when you let off the gas. But as far as I know that is the only aftermarket alternative to junkyard dogs. New throttlebodies don't even come w one I don't think

There are two springs at play here. One to assist in the throttle cable returning to it's at rest position. The other is the one on the TB which returns the throttle valve back to the closed position. The TB is critical because if it breaks you may be left with a WOT condition. The cable return spring will likely be strong enough to pull back the throttle valve to the closed position. I personally like the pedal light touch. Guaranteed new TB's have a throttle return spring. If you have a hanging idle due to a weak spring it can only be the spring on the TB. What you are seeing is most likely a ECU command that allows the rpm's to drop in a controlled manner vs. just having the throttle being slammed into the closed position causing a rapid drop in the rpm's.