Okay, folks. What would cause a car engine to misfire at idle after the engine is warmed up?

It's a 2009 Chevy Malibu. You can definitely feel it while sitting at a red light. There is no CEL, by the way.

I'd start with the easy stuff, unless you've had them replaced in recent history - plugs and ignition cables. from there it just gets more and more expensive [to check, even.. double down to fix]

olderuncle944 · 70-79, M

coil pack wires or plugs to start have it scanned for pending codes some codes take several drive cycles to come on when it misfires when warm means its a heat related problem

olderuncle944 · 70-79, M

ok could just be a coil pack im certain the cel will come on soon and pin point the cylinder

Penny · 46-50, F

cracked head gasket? lol i am guessing

SubstantialKick · 31-35, M

@Penny I would sure hope not 😬...

SW-User

Carbon build up on spark plugs at minimum

olderuncle944 · 70-79, M

is the engine a 4 cyl or 6

SubstantialKick · 31-35, M

@olderuncle944 4 cylinder, 2.4 liters.

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