Yes. An Arahant‘s citta vithi will still have the 7 javana citta. However, they don’t have any kammic energy.
It is to be noted that it is those javana cittas that that provide power to body muscles to do physical work, and even speech. That is in addition to kammic energy in them.
For example, when you lift an extra heavy package or when pushing a stalled car you give a bit more “oomph” to those javana citta.
In other words, a javana citta may impart kammic and physical energy. An Arahant‘s javana citta provides only physical energy for necessary physical work and speech.
However, that physical energy is only a small fraction of the energy needed, for example to lift a package. Most of the energy comes from the food we eat. The energy of javana citta only sends a message to the brain. That is why one is unable to do much physical work when physically weak.
I started writing and it got longer and longer!