The disease has caused her immune system to 'go haywire'. [=to stop working properly]
The stock market has 'gone' completely 'haywire'.
The old radio 'went haywire'.
(..) I thought these nukes all detonated by remote control? The MUTO's knocked out everything electric, including detonators. These can't even range without these things going haywire. But this, this on the other hand, this is old school. Clockwork. Takes a licking, keeps on ticking. (..)2014 Godzilla