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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

exhaust leak ???

Old 05-22-2008, 03:59 PM
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exhaust leak ???

I have an exhaust leak, pre cat. can that cause a rough idle or other problems on my turbo motor?????
Old 05-22-2008, 05:33 PM
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Before the o2 sensor?
Old 05-22-2008, 06:12 PM
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no between o2 sensor and cat
Old 05-22-2008, 06:18 PM
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As far as I know, any leaks behind the o2 sensor will not cause it to run bad. Unless we are talking about a BIG hole.
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