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Air pump S90-V90

posted by  sixvolvos on  Fri Sep 24 02:58 CST 2010
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last visit: Tue Mar 5 07:57 CST 2013
[RELATED]

PROBLEM SOLVED!
There is no problem.
From Alldata, paraphrasing:
The air pump comes on 12 seconds after the engine is started and if the engine temp is between -12 F and +95 F.
Then it runs for 70 seconds.
It starts again sometime after 10 minutes of engine running when the system is doing a diagnosis.

So it is supposed to come on, and I hear it because the pump is getting noisy.

Sixvolvos






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