IUEC135ELEVATOR Posted November 22, 2021 Share Posted November 22, 2021 When putting truck into gear from park (especially for first time if not used for a week or so) the truck lunges. With a high idle and a 4.30 gear I do expect a little lunge but this feels more than I was expecting. I am basing this off my past and experience. My 7.4 chevy with 4.11 has no lunge (auto trans) and any drag car with 4.11 or 4.56 gearing has never lunged because they were all Muncie or Saginaws (so there can be no lunge). Never had a truck with a 4.30. So is this normal for this truck? Quote Link to comment Share on other sites More sharing options...
Mirage Flatter Posted November 22, 2021 Share Posted November 22, 2021 Ours does the same thing, but I don't think any worse than I'd expect when everything is cold and the engine running at high idle. It seems to be what I'd call pretty normal after everything's warmed up, and I'd think it will probably get better with further break in. Our truck is at 1200 miles currently. My $.02 FWIW. Quote Link to comment Share on other sites More sharing options...
Overthebars Posted November 22, 2021 Share Posted November 22, 2021 Mine does the same thing, definitely something I'm still getting use to. Quote Link to comment Share on other sites More sharing options...
bshort Posted November 22, 2021 Share Posted November 22, 2021 Mine as well, even when high idle kicks down a notch, it still lunges. If you shift when high idle is on, better have a heavy brake foot. Quote Link to comment Share on other sites More sharing options...
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