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Old 01-24-2023, 07:25 AM
4runherpow 4runherpow is offline
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4runherpow 4runherpow is offline
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Join Date: Oct 2015
Posts: 71
4runherpow is on a distinguished road
Thanks @MikeiNH67. I asked the mechanic who did the upstream, since I didn’t have time, to look at the rest of the system and he said he didn’t see or hear a noticeable leak. However, I know there probably is one, because when I give it gas in neutral I can hear that classic deep note gurgling that sounds like a leak.

Is it possible though a clogged cat could also make that sound but no leak? I also have the manifold ticking like everyone but my understanding was that typically doesn’t throw a code.

One more piece of info: the light was coming on more frequent a few weeks ago, but not every trip out. I tried cataclean and after that the issue now seems worse.. could the cataclean fouled my downstream sensor? I replaced that one 10-15k ago. Prob not right, because I would be getting other codes? Man this is confusing.

Thanks for the help

Last edited by 4runherpow; 01-24-2023 at 07:27 AM.
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