dbear134 Posted September 23, 2012 Share Posted September 23, 2012 Hi I have a 2003 (recently purchased :-() toyota avensis 1.8 petrol Drives really well smooth and no lack of power The Malfunction indicator lamp has come on I took it to toyota who said it was the oxygen sensor that needed replacing £325 !! had one fitted locally for a fraction of this and has ran ok for 2 days ...now the light has come back on again anyone know anything about this fault ? thanks Doug:huh: Link to comment Share on other sites More sharing options...
cgksheff Posted September 23, 2012 Share Posted September 23, 2012 Did they clear the ECU when they fitted the new sensor? Link to comment Share on other sites More sharing options...
dbear134 Posted September 23, 2012 Author Share Posted September 23, 2012 yes new sensor fitted friday drove about 80 miles then came back on Link to comment Share on other sites More sharing options...
RootsBooster Posted September 23, 2012 Share Posted September 23, 2012 yes new sensor fitted friday drove about 80 miles then came back on Did they replace the correct one? Link to comment Share on other sites More sharing options...
dbear134 Posted September 24, 2012 Author Share Posted September 24, 2012 hopefully !! i asked toyota they said the front one on engine as you look into car Link to comment Share on other sites More sharing options...
stimpy Posted September 26, 2012 Share Posted September 26, 2012 Faulty sensor? Cheaper does not always mean better.... Link to comment Share on other sites More sharing options...
zigzag Posted September 26, 2012 Share Posted September 26, 2012 Number one suspect is a leak in the exhaust system before the oxygen sensor sucking in air which fools the sensor into changing the fuel mixture ,its not always the sensor that is at fault just the symptom of another problem. A squirt of start gas around the exhaust manifold can identify the leak as an increase in idle speed . hope this helps.. Link to comment Share on other sites More sharing options...
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