LT1-LT4 Modifications 1993-97 Gen II Small Block V8

P0133 and p0153 after muffler work??

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Old 08-15-2016, 10:09 AM
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Default P0133 and p0153 after muffler work??

I recently had my exhaust redone, and since then I have been getting recurring p0133 and p0153 codes thrown. It started out as only a p0153, but then it added the other one. Now I know this has been beaten to death, but I haven't seen anyone having this issue after exhaust work, only after headers are added.

Therein lies my problem, as I've had headers for as long as I've had the car, and put 4k miles on it without an issue. I even ran open headers for about 200 miles, again no issue with codes. But once I had the new exhaust added, it started to toss me this code after its been warmed up. I don't get it.
Old 08-17-2016, 10:32 AM
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Anyone?
Old 08-17-2016, 10:52 AM
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How old are the O2's?
Old 08-17-2016, 12:27 PM
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Originally Posted by SS RRR
How old are the O2's?
No clue, but they seemed fairly clean when I looked under the car
Old 08-17-2016, 01:44 PM
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You can get scanning software and see for yourself if the voltage is slow to change, or you can roll the dice and replace them. I'd recommend the Denso units. Seems a lot of people complain about Bosch O2's.



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