Car hiccup

This problem is more likely a driveability problem with the engine. What you are probably seeing is a backfire into the intake manifold followed by a stumble i.e. lack of power. Both are symptoms of a lean condition on warm up. There might be a vacuum leak somewhere that is letting unmetered air into the intake system. Alternately, there might be a fuel delivery problem that keeps the injectors from delivering the correct amount of fuel for the air being metered. Also it could be a slightly out of tolerance sensor that is telling the computer that the engine is warmer than it really is. Have an engine tech do some diagnosis. Hopefully they will be able to narrow the driveability problem down to a specific cause.

Let us know what happens.