What can cause TheEngine ToHave low idle and want to kill when stopped?ItBucksTo

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I just had the ignition housing assembly changed out and 2 recalls done at the dealer.Recalls on the electric power steering assist which they reprogrammed the power control module and ignition control module second recall was the Engine cover modification safety recall where they modified Engine cover and installed a kit.After having all this done I now have #2&3 bad coil packs and plugs.But No Check engine lights come on at all.I've never had these problems with it sounding like it wants to kill at idle or runs ruff and bucks after I get going.This didn't never had this problem til after they I got back from dealer.Since my check engine light doesn't come on like it should could it be something they did when reprogramming computers for recall or the Engine Modification recall??? It ran good before just don't understand.Thanks for any advice and help!!!