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Air pump S90-V90

posted by  sixvolvos on  Thu Sep 16 13:47 CST 2010
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last visit: Tue Mar 5 07:57 CST 2013
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'98 S90 with 152K miles has air pump coming on after I drive it a bit.
Only at idle as far as I know, but maybe I just cannot hear it while driving.
I hear it when stopped at a light
Spins up, runs for 3-5 seconds, then spins down.
Outside temp from 60 to 80 degrees, engine is warmed up by then.
Why is it doing this?

Original O2 sensors. Are they involved in this?
Do I need a new front one or both?

Searching results only in 850/V70 info and I'm not sure advice applies.
Anyway this scenario is not mentioned.

Who has info?

Thanks,
Sixvolvos






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New Air pump [S90-V90]
posted by  sixvolvos  on Thu Sep 16 13:47 CST 2010 >


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