Millenia S VERY slow acceleration - Page 2 - Mazda Forum
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post #11 of 19 (permalink) Old 09-18-2012, 11:06 PM
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If you don't get any codes then it's the CaTs

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post #12 of 19 (permalink) Old 09-18-2012, 11:19 PM Thread Starter
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I'll put the codes on here Friday. That's the only day I'm not busy this week.

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post #13 of 19 (permalink) Old 09-18-2012, 11:21 PM Thread Starter
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@Subzero I'll be sure to keep you updated when I get it looked at. And if I get any codes back I'll post them.

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post #14 of 19 (permalink) Old 09-19-2012, 12:51 PM
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Sure no problem, keep us update

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post #15 of 19 (permalink) Old 10-12-2012, 08:13 PM
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I think my cat(s) may be clogged as well. although I have not been able to figure out how to get the pre cats off. anyone done this or gut them on the car ?
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post #16 of 19 (permalink) Old 10-12-2012, 08:21 PM
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please remove double post

Last edited by TravisJamesBarrett; 10-12-2012 at 08:21 PM. Reason: double post
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post #17 of 19 (permalink) Old 08-09-2018, 10:41 PM
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I have a 2001 Mazda Millenia with similar problems. I was wondering if you ever got yours to accelerate like normal again? Did you cut the Cats off? If so, did that mess with the 02 sensors?
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post #18 of 19 (permalink) Old 08-11-2018, 05:45 PM
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I to have a accelerating problem with the AC turned on, but when I am am in second gear or third, the motor just falls flat or hesitates till I slowly reach 2800 RPM and then it starts to move. Could this be the TPS? Throttle position sensor? If so how do you set it to the right position. Its a ----- to get to.
The car runs good without the AC compressor turned on. I don't believe this is normal.

nothing new just stock
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post #19 of 19 (permalink) Old 10-01-2018, 07:08 PM
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To get the rear off you have to remove the solenoid pack off the back side of the upper intake pipe and then remove the solenoid and bracket off the fire wall and then you can finagle it out of the back through the top. The front is easy. Remove the front intercooler will make it easier to get to the upper exhaust manifold bolts. If you knock them out you won't get a code for it or at least I haven't yet and I've been driving it like this for the past year.
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