run out of steam
lose steam

That makes a difference, because albums tend to lose steam over time.

For much of the last year, the entire security effort seemed to lose steam.

One thing's sure: the play has lost whatever steam it built up earlier.

Kerry lost steam at that point and Bush never looked back.

After this heroic effort, the kitchen seemed to lose steam.

But as the fight wore on, his punches lost steam.

The group itself began to lose steam along with the movement and many members left as a result of creative differences.

A global central bank could provide more money to the world economy when it is rapidly losing steam.

There are signs, too, that the family values movement is losing steam.

The story seemed to lose steam as the search continued.