Not sure with catalytic converter is bank 2 for 2007 Ford Taurus. - Taurus Car Club of America : Ford Taurus Forum
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post #1 of 17 (permalink) Old 04-15-2019, 10:08 PM Thread Starter
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Not sure with catalytic converter is bank 2 for 2007 Ford Taurus.

Where is the catalytic converter bank 2 on a 2007 Ford Taurus 3.0 OHV, front or back?
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post #2 of 17 (permalink) Old 04-15-2019, 10:09 PM
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Bank#2 is the front (radiator) bank.
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post #3 of 17 (permalink) Old 04-16-2019, 08:13 AM Thread Starter
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Thank you so much!

So would sensor 2, bank 2 be right after the 1st catalytic converter?
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post #4 of 17 (permalink) Old 04-16-2019, 09:37 AM
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Pic for G4 of mine. Hope this helps.
Not very difficult location if you have the ability to remove the wheel and fender liner.


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post #5 of 17 (permalink) Old 04-16-2019, 10:39 AM
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Sensor#2, bank#2 is the downstream (post-cat) o2 sensor for the front bank. Easy way to remember which bank is which: bank#1 is always where #1 cylinder/#1 spark plug resides.

Last edited by sheila; 05-18-2019 at 08:31 PM.
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post #6 of 17 (permalink) Old 04-16-2019, 11:26 AM Thread Starter
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Thanks again!
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post #7 of 17 (permalink) Old 04-16-2019, 05:08 PM
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Pre cat electrical connectors are green, post cat connectors are blue.
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post #8 of 17 (permalink) Old 05-18-2019, 04:53 PM
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I have 3 catalytic converters. I know bank 2 is the cat up front, bank 1 by the firewall. So which is the rear, bank 1 or bank 2?
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post #9 of 17 (permalink) Old 05-18-2019, 08:25 PM
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3rd cat is after banks 1&2 merge. After the y-pipe. It is not monitored by o2 sensors (pcm).
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post #10 of 17 (permalink) Old 05-21-2019, 07:58 AM
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Thank you!

I used a laser light and the 2 cats I can easily access are reading higher at the inlet than outlet (bank 2 and rear). I am not having any symptoms other than CEL (code PO430). No smell, no rattle noises, no loss of power. Could a bad 02 sensor make it read bad or do I just need to replace my catalytic converters? Bank 2, it's only about 30 degrees hotter, but the rear cat, it's like 120 degrees hotter at the inlet. I don't know much about cars. Just trying to learn as I go. Auto store did not mention the cat or 02 sensor at all. They said maybe a small vacuum leak.

Last edited by blondechic451; 05-21-2019 at 09:11 AM.
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