I brought a 96 rodeo 2.6 efi petrol auto, it's a great little truck and runs well, but it has a really annoying idling problem. Once it's warm it idles rough, like it's thumping, really rough, I can reset it with a rev on the gas pedal, that's the only thing that fixes it, had a mechanic look at it, $300 later, new plugs, leads, dist-cap, timings fine and it still does it.

Only does it when warm, really annoying, anyone hear have any ideas?

Thansk in advance

MP