5 people reported this problem
Check Engine Light Due to Air Pump Check Valve Failure on Volvo 960
1996 Volvo 960 129,000 mi, Visitor
Check engine light on...codes indicated air pump and check valve. estimated cost to fix provided by independent volvo mechanic $965
Persistent check engine light explained by Volvo mechanic as failed air pump. Recommended replacement along with check valve...estimate $700 or more. I declined. Was looking for way to perhaps fix with a shade tree approach...