which o2 sensor do i put the antifouler plugs on and how many - Fuelly Forums

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Old 07-22-2008, 03:01 PM   #1
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which o2 sensor do i put the antifouler plugs on and how many

which o2 sensor do i put the antifouler plugs on and how many?i have one on the intake manifold and right after the cat.
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Old 07-22-2008, 04:13 PM   #2
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One should go on the exhaust manifold- not the intake
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Old 07-22-2008, 05:37 PM   #3
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i meant exhaust not intake.what about the 2nd o2 on the cat?
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Old 07-22-2008, 07:10 PM   #4
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IMHO the most important one to put the extender on is the one between the engine and cat, as far as I know, its not a bad idea to put the one on the post cat sensor as well.
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Old 07-22-2008, 07:48 PM   #5
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IMHO the most important one to put the extender on is the one between the engine and cat, as far as I know, its not a bad idea to put the one on the post cat sensor as well.
i agree if you put one upstream, that sensor will send one signal, and the sensor downstream(after the cat) will expect a certain change. unless you have identical setups on both sensors, then it will more than likely throw a code.
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Old 07-26-2008, 05:52 PM   #6
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I remember reading somewhere that they shouldn't be used on the downstream sensors, but don't remember where I read it so I have nothing to back that up. I can't even remember what the reason for that was. I have heard of people using one per sensor and have also heard of people using two per sensor to move the sensor further out of the exhaust stream.
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