00 gsr


So I know what they all stand for:
1- my primary o2 has been bad, never changed it

14- I changed this to a used one, worked fine for a day and went bad, not so important to
me

2- Secondary o2 has been taken off due to the position of bung on the test pipe,
and will be switching to an obd1 ecu when I get tuning

63- Secondary o2 sensor, well since its hanging there under the car

65- Secondary o2 sensor heater... I'm assuming has to do with the sensor itself?

86- ECT what causes this to go bad? what should I do to fix? how much?


I checked all plugs and they are connected.

I noticed my speedo not working so i decided to diagnose the car and came up with the 63, 65, and 86. (On top of 1,2, and 14 that I already know of) I'm assuming 2, 63, and 65 will go away once its obd1 ecu?

What should I do now? How do i fix this? Does anything have to do with the speedo? I checked the sensor and it's plugged cool.

Please help.
Thanks.