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Re: Found a resistor in oxygen sensor wiring, need help...
The bottom line here is he needs to use a new sensor in the pre-cat position. He needs to toss the hacked sensor/harness. If they switched the flat connector to a square connector on the pre-cat harness, I would replace it with the correct connector. Pigtails are available, see pigtail parts list, right hand column on Shoebox:
1993-1997 F-Body Part Number Collection Then you need to make sure your SES light is working, and the previous owner didn’t disable it to sell you the car. I would also recommend you use an OBD-2 scanner to check for codes. You need to download a copy of the 1996 factory service manual - free courtesy of GaryDoug. It has everything you need to chase down codes, electrical problems, mechanical problems, etc.: https://www.mediafire.com/?40mfgeoe4ctti |
Re: Found a resistor in oxygen sensor wiring, need help...
Originally Posted by Injuneer
(Post 7019369)
The bottom line here is he needs to use a new sensor in the pre-cat position. He needs to toss the hacked sensor/harness. If they switched the flat connector to a square connector on the pre-cat harness, I would replace it with the correct connector. Pigtails are available, see pigtail parts list, right hand column on Shoebox:
1993-1997 F-Body Part Number Collection Then you need to make sure your SES light is working, and the previous owner didn’t disable it to sell you the car. I would also recommend you use an OBD-2 scanner to check for codes. You need to download a copy of the 1996 factory service manual - free courtesy of GaryDoug. It has everything you need to chase down codes, electrical problems, mechanical problems, etc.: https://www.mediafire.com/?40mfgeoe4ctti |
Re: Found a resistor in oxygen sensor wiring, need help...
I guess I incorrectly ASSumed someone had moved a square connector after-cat sensor to the pre-cat position, and replaced the flat car harness connector with a square connector so the after-cat sensor could be plugged in. I explained that above in post #6, and repeated it in post #7. I guess I also mistakenly ASSumed you would have corrected what I wrote if that was the case.
I'll take another flyer at an assumption that you are replacing both pre-cat sensors. Why would they not both be the same part number? The Shoebox parts list shows the pre-cat sensors as AC Delco AFS75. Has that part # been superseded ? Or are you assuming that the existing part #’s are correct? In any case, I’m so confused at this point that I think it’s time to drop out of this conversation. |
Re: Found a resistor in oxygen sensor wiring, need help...
Originally Posted by Injuneer
(Post 7019371)
I guess I incorrectly ASSumed someone had moved a square connector after-cat sensor to the pre-cat position, and replaced the flat car harness connector with a square connector so the after-cat sensor could be plugged in. I explained that above in post #6, and repeated it in post #7. I guess I also mistakenly ASSumed you would have corrected what I wrote if that was the case.
I'll take another flyer at an assumption that you are replacing both pre-cat sensors. Why would they not both be the same part number? The Shoebox parts list shows the pre-cat sensors as AC Delco AFS75. Has that part # been superseded ? Or are you assuming that the existing part #’s are correct? In any case, I’m so confused at this point that I think it’s time to drop out of this conversation. |
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