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1984 3 wire oxygen sensor????? 200 1984

'84s did not use the 3 wire sensor as it was not required by US law. All replacement harnesses for the '83-4 years were made with the provision for a 3 wire as were some of the later stock harnesses. If the sensor will not screw into the manifold either you have the wrong sensor or more likely the PO screwed the wrong plug into the mani and crossthreaded it. See if you can find the proper size tap and clean the threads, you may be able to clean them up.
Dave Shannon
'84 245 200K
'85 244Ti 199K
'86 740 230K
'88 240 180K
www.volvo2.homestead.com






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