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As a follow up... the TPS that was on it, the one that was bouncing around, had been on the car for almost 4 years. The spare I had was the one that was on the car originally. I had an issue with DW injectors, and changed everything trying to figure it out, and the one in question was a new OEM one. So this evening I changed the TPS. I set it to the same voltage it had been, 458, and went to the car wash. The car is idling much better. I stil have an occasional bobble, but I need to gap my plugs back out a little bit more and I think that will go away. When I started the car at the car wash, the voltage had dropped to .448 (the ECU had adjusted to the new part I guess) but still idling nice and sounding better. It still has a voltage wobble, but not in the rapid manner of the other, and it only jumps one way, up. It jumps from 448 to 453, but comes right back. The one on the car now also hits about 4.2 volts at wot, where the other one wouldn't exceed 3.95. Not only did it make the car idle better, but it woke it up a little bit too. The last few days, it just hadn't felt right. I kept thinking fuel flow, but just had to change my fuel pump in a hotel parking lot in NC, I had cleaned everything, was getting correct pressure, but it still felt like it was starving a little. Like it was getting less throttle than I was giving it. I think that symptom was also coming from the flaky TPS cause it's not doing it now. Maybe that 4-5v spec is pretty important.
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