If an Iowan is not sentenced within 90 days of being arrested, what happens?

There is no requirement to be sentenced within 90 days of your arrest. You need to have trial information within 45 days of your arrest, and then trial within 90 days of the trial information if you do not waive speedy trial.  As this is a felony, sentencing will probably be 30-45 days after trial or pleading due to the requirement for a Presentence Investigation.  There is also a requirement for the trial to occur within 1 year unless you waive trial within 1 year of the trial information