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Discussion Starter #1
hi guys,
I have a 97 jetta that has an intermittent o2 sensor which gives me an engine light on and off while on the highway. So when I went to check the o2 sensors there is only an upstream sensor. is this normal? the car was manufactured in Mexico. I believe it should have 2 and there is no other wires or open couplers. If any one has any insight on this please let me know thanks.
 
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