got code p0171 little help needed - Page 2 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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Old 11-07-2012, 10:03 PM   #11 (permalink)
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That's pretty wild man. Do you have the workshop manual for our car?

MAZDA 6 FULL WORKSHOP MANUAL!!!!!!

Follow the link in that thread. Hopefully that will help you figure this out.
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Old 11-08-2012, 01:26 AM   #12 (permalink)
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it looks like i don't have most of the tools to do half them tests might have to suck it up and take it in
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Old 11-09-2012, 03:19 AM   #13 (permalink)
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trying to find a back pressure tester local just to rule out the converter if that's not bad i will look at changing the plugs and replacing the first o2 sensor.
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Old 11-09-2012, 08:47 PM   #14 (permalink)
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If your cat is bad, you'll feel a noticeable "bite" immediately after shifts. I can't really explain it, but if you pull away gently from a stop, the engine RPM will build until the shift, right after the shift, you'll immediately feel a "bite" where the engine feels bogged down.

I dealt with a bad cat on my 04. I ended up replacing it with a Magnaflow high flow one.

If you aren't having those symptoms, chances are the cat is fine.
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Old 11-10-2012, 10:34 PM   #15 (permalink)
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i ordered the back pressure tester just to be sure i have the 05 6i atx with 2 converters has one built into the manifold and 1 right after the manifold with 3 o2 sensors.

i only get hard shifting from 1st to 2ed when the car is cold when its warmed up its fine planing on taking it in to see if there is a pcm/tcm update not sure its ever been done.
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Old 11-11-2012, 12:24 AM   #16 (permalink)
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recently added a can of the stp motor treatment think its like seafoam to the tank and filled up on 89 130 miles and no code has came back yet might take a little longer just did it to see what happens.
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Old 11-11-2012, 01:23 AM   #17 (permalink)
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Quote:
Originally Posted by saint6 View Post
i ordered the back pressure tester just to be sure i have the 05 6i atx with 2 converters has one built into the manifold and 1 right after the manifold with 3 o2 sensors.

i only get hard shifting from 1st to 2ed when the car is cold when its warmed up its fine planing on taking it in to see if there is a pcm/tcm update not sure its ever been done.
Ohhhh... Ok, I did not realize that you had a PZEV 6. I don't think the manual I posted above applies to those vehicles. That could be why I can find no trace of that CEL code that you listed. LOL.
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