ISV valve hose

[Snoopy]

Hi. Just witnessed a strange failure, while looking under the hood
with engine running. The rubber hose which goes from ISV to intake
(not the one from throttle to ISV) was kind of "imploded", as if the
valve wasn't giving enough air. Engine was idling more or less fine.

Could it be because the rubber hose got old and too soft? Or is it something
wrong with the ISV?


'90 100 2.3 NF

-- 
   Snoopy
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