Searching the archives couldn't answer my question, so, here goes. I have never checked the TPS resistance on my '99 until this evening. The manual says to check the resistance across the blue & black wires. Mine read 5.0k ohms, right where it's supposed to be. The resistance at fully closed throttle is checked with the yellow and black (Y/:) wires and it's supposed to be "650~750" ohms. There's a formula that calculates that value in the book: meter reading of the Y/B resistance x 0.13~0.15 = 650~750 ohms. So, the reading should be 5k ohms. When I first checked it, it read 1.3k ohms. The highest it will adjust to is only 1.6k ohms. At full throttle, it reads about 4.5k ohms. In the archives, I found a post that reported almost exactly the same meter readings as I got. Has anyone gotten any other TPS readings? A local mechanic told me that just about every TPS he checks is off enough to affect performance, so I thought I'd check mine. But I don't know how to interpret the results. A new TPS is about $130, so it's not something I'd like to replace if I didn't have to. Thanks.