That's not your TPS. Bad TPS normally causes a stumbling on initial acceleration. It's very easy to check with a multimeter!

I'd check and clean the MAF & IAC valve. Plus look for intake leaks... Those correlate to erratic idle.

2000 SVT #674 - Check it out!

Whoever coined the phrase; "If it ain't broke; don't fix it" ~ Just doesn't get it...