5ktq breather hose

[John Cassidy/Sallyann Mulcahy]

Greetings!

Can someone fill me in on the causes and consequences of a colapsed breather hose on an '87 5ktqa?  It's the one that goes from the valve cover to the crankcase.  The car runs strong except for a high idle (1300 rpm and on rare occasion, jumpy) and a tendency to surge during throttle closing while shifting.  Related, perhaps?

Thanks in advance,

J C
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