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looking at an 01 v70xc

posted by  KlausC on  Tue Mar 2 05:33 CST 2010
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Unmetered air in the intake causes the ECU to enrich the mixture which then coats the plugs with too much gasoline and the resulting bad burn coats the O2 sensors.

Over on Volvospeed, or was it the UK Volvo site, someone demonstrated how to clean off an O2 sensor with a blowtorch. They cannot be cleaned by rubbing with anything, rubbing destroys them. So, I suggest running it hot after finding the cause of the rich burn. If it works, it saves a few hundred bucks.

Klaus
--
Praying for Cynthia Amendt, heaven bound






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