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Air/Smog pump V70-XC70

posted by  gregpat on  Mon Mar 23 16:29 CST 2009
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last visit: Sat Jan 11 19:04 CST 2014
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Gooday All!

Any Idea what turns on the air pump... Is there a relay
and or a temp sensor? Location?

I think I have heard mine come on when the temp is not to cold
and sometimes just as I am about to switch of..?

Ay Ideas would Much Appreciated

Thanks-A-Lot !
Greg







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    Air/Smog pump V70-XC70

    posted by  KlausC on  Mon Mar 23 17:11 CST 2009
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    last visit: Fri Oct 24 10:15 CST 2014
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    The ECU moniters the engine coolant temp sensor, if cold enough at start up the ECU signals the pump to turn on via a relay on top of the radiator housing.

    The pump should not run when the engine is warmed up or at shut down. Verify that the temp indicator in the instrument panel is above cold before finding faults in the system. It could be that the ECT sensor is at fault.
    --
    My name is Klaus and I am a V ♂ lv ♂ holic.







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