Auto Tranny Jerked on me w/ a flashinig "AT" light - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 19 (permalink) Old 01-28-2020, 11:24 PM Thread Starter
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Exclamation Auto Tranny Jerked on me w/ a flashinig "AT" light

Aight so I have a 2009 2.3 engine w/ AutoMagic Tranny....

It has the worst designed Dipstick to see if I have the correct level of ATF in it...Just tonight when driving home my car jerked really hard and the "AT" on my dash flashed...scared the crap outta me since that never happened before...That Dipstick is hard to figure out for some reason...So anyone else here have a trick to know if I have the correct or if I overfilled it on accident?...

Thanks in advance!!


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post #2 of 19 (permalink) Old 01-29-2020, 09:39 AM
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If your dipstick has only one pair of marks like the one in my 2011, then it probably is read the same way. But I don't like to assume anything like that, so hopefully someone owning the same model/gen as yours will post with the correct 'book' procedure.

2011 3i 2.0 A/T 130K miles (daughter's ride which I maintain)
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post #3 of 19 (permalink) Old 01-29-2020, 06:52 PM
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Is it stuck in limp mode? (AT light on and D goes straight to 3rd gear)
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post #4 of 19 (permalink) Old 01-30-2020, 09:40 PM Thread Starter
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Originally Posted by Birchtree View Post
Is it stuck in limp mode? (AT light on and D goes straight to 3rd gear)
Nope...No LImp Mode...I was afraid to drive after that happened but I was only 2 miles away from home so I drive slowly...haha...When I got home I added a little more ATF in and ever since then the car drives perfect again...No errors "so far"..(knock on Cyber Wood)

Not sure if I over filled or if it was actually low on ATF....Since I cant get the Dipstick to read...I will never know now haha


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post #5 of 19 (permalink) Old 01-30-2020, 09:43 PM Thread Starter
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Originally Posted by m3iguy View Post
If your dipstick has only one pair of marks like the one in my 2011, then it probably is read the same way. But I don't like to assume anything like that, so hopefully someone owning the same model/gen as yours will post with the correct 'book' procedure.
The Tranny Fluid Dipstick looks like this....everytime I pull it out to check the fluid never gives a solid line to indicate the level its all over the place...I cant tell where the actual level is...lol
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File Type: jpg 13337290_f520.jpg (18.4 KB, 8 views)


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post #6 of 19 (permalink) Old 02-01-2020, 10:55 AM
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I don't know if I'm understanding exactly what you're saying, but in the picture you posted, the level looks clear to me. The level looks to be just below the "C" on the stick, which would be overfilled by around 1 quart (or 2 quarts if you're checking with the fluid cold). However, I'm also assuming you are checking with the vehicle idling, parked on a very level surface, and you are cleaning off the dipstick and pulling it out again to check the level.

You really need to get the actual 'book' level checking procedure for your specific vehicle. Your vehicle's dipstick looks like mine, and I'm making an assumption that the level checking is the same as well, but that could be incorrect. You should be able to find an owner's manual for your vehicle online from the Mazda website.

2011 3i 2.0 A/T 130K miles (daughter's ride which I maintain)

Last edited by m3iguy; 02-01-2020 at 10:59 AM.
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post #7 of 19 (permalink) Old 02-01-2020, 11:18 AM
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I'm betting the TCM is the issue. When that goes out, or is going bad, there will be a resounding TUMP at the floors which will make you think and feel like you slammed into a parking lot stop block. This is also followed up by the transmission lights on the dash (gear numbers, etc) lighting up like a Christmas tree.

Mazda redesigned the TCM at least four or five times. They used to be $750 (new), and the later suffix the better. i.e. 'E' better than getting the 'C'. Search the Googles for TCM rebuilders. IIRC, one I had located on e-Bay is based in San Diego.

Back when my TCM took a dump, it was at 75mph on the highway with the above behaviors. Yes, that scared the hell out of me. I got off the road and limped home at 35-mph on side roads. No matter what I did, that thing thumped and slammed constantly. I located a new TCM for $400 and paid a transmission shop to replace it.

The TCM is about the size of a pack of cigarettes and is located under the battery, attached right to the transmission. Seems the heat radiating from the transmission is what causes them to degrade. A lot of people claim the computer needs to be programmed to play nice with a new TCM, but that's typical urban myth/Internet BS.

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post #8 of 19 (permalink) Old 02-02-2020, 12:10 AM Thread Starter
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Quote:
Originally Posted by m3iguy View Post
I don't know if I'm understanding exactly what you're saying, but in the picture you posted, the level looks clear to me. The level looks to be just below the "C" on the stick, which would be overfilled by around 1 quart (or 2 quarts if you're checking with the fluid cold). However, I'm also assuming you are checking with the vehicle idling, parked on a very level surface, and you are cleaning off the dipstick and pulling it out again to check the level.

You really need to get the actual 'book' level checking procedure for your specific vehicle. Your vehicle's dipstick looks like mine, and I'm making an assumption that the level checking is the same as well, but that could be incorrect. You should be able to find an owner's manual for your vehicle online from the Mazda website.
That picture I posted is not mine...thats just a picture I found on GOOGLE to show what the Dipstick design looks like....mine does not give off a solid line for the levels...Everytime I pull the Dipstick theres ATF all over it..can not tell the actual level of ATF!...It sucks I have no clue if I am Overfilled or not..


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post #9 of 19 (permalink) Old 02-02-2020, 11:25 AM Thread Starter
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Yup you are totally right!...(sad Face)

This morning I went to start up my car...automatic CEL light and "AT"...car wont switch into gear....UGH!..

F'in FoMoCo parts...Pretty sure thats the damn issue...haha

I only have 147k miles and these kinda issues should not happen right?

Damn....Well now on the hunt for a replacement one....

Quote:
Originally Posted by VWandDodge View Post
I'm betting the TCM is the issue. When that goes out, or is going bad, there will be a resounding TUMP at the floors which will make you think and feel like you slammed into a parking lot stop block. This is also followed up by the transmission lights on the dash (gear numbers, etc) lighting up like a Christmas tree.

Mazda redesigned the TCM at least four or five times. They used to be $750 (new), and the later suffix the better. i.e. 'E' better than getting the 'C'. Search the Googles for TCM rebuilders. IIRC, one I had located on e-Bay is based in San Diego.

Back when my TCM took a dump, it was at 75mph on the highway with the above behaviors. Yes, that scared the hell out of me. I got off the road and limped home at 35-mph on side roads. No matter what I did, that thing thumped and slammed constantly. I located a new TCM for $400 and paid a transmission shop to replace it.

The TCM is about the size of a pack of cigarettes and is located under the battery, attached right to the transmission. Seems the heat radiating from the transmission is what causes them to degrade. A lot of people claim the computer needs to be programmed to play nice with a new TCM, but that's typical urban myth/Internet BS.


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post #10 of 19 (permalink) Old 02-02-2020, 12:22 PM
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Quote:
Originally Posted by ultimica06 View Post
Yup you are totally right!...(sad Face)

This morning I went to start up my car...automatic CEL light and "AT"...car wont switch into gear....UGH!..

F'in FoMoCo parts...Pretty sure thats the damn issue...haha

I only have 147k miles and these kinda issues should not happen right?

Damn....Well now on the hunt for a replacement one....
At 147K miles, you did well. Mine went out before 90K miles, and a lot of Internet search I executed back when mine went out showed them failing in as little as 35K miles.

Let us know the outcome.

P.S. You never did follow-up with pictures or details involving the repairs of your dashboard.

2006 Mazda 3 2.3L Hatchback 5-speed Automatic - 180K miles
I never purchase Harbor Freight tools.
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