i need to change my oxygen sensors on a mitsubishi galant 2003 gtz 6v, is there a way to check which one is it? thanks

Asked by Jul 14, 2016 at 10:44 AM about the 2003 Mitsubishi Galant GTZ

Question type: Maintenance & Repair

is it better to change all of them or should try to find the one is failing? i
changed one on top once, but i dont know the location of the other 2-3, any
advice will help alot thanks.

1 Answer

12,035

I change the upstream HEGO's at the same time they send a signal that actively Helps control the air fuel ratio. the downstream 02 sensors After the catalytic converters merely monitor the cats operation if running to cool they will trigger a DTC .. converter efficiency. 80,000 is good service life. A couple manufactures make most of the HEG0's (heated exhaust gas oxygen) sensors NOT, expensive.

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