PLZ HELP -- 05 Mazda 3I - bad transmission or sensor? - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 1 (permalink) Old 03-19-2017, 02:14 PM Thread Starter
Bicycle Rider
Join Date: Mar 2017
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PLZ HELP -- 05 Mazda 3I - bad transmission or sensor?

I have an 05 Mazda 3I 250k miles automatic - just purchased at an auction because im poor, now the issue; it will run only when first cranked, I put it in drive and it will go until i release the gas pedal, then just slips into a "neutral" phase. I rev and it goes nowhere. I turn it off, wait a minute and put in reverse, again runs until i release throttle or sometimes even as im going it will just go into a neutral phase. I can rev to any number but wont go anywhere, it shows on dash when im in all gears but wont actually engage, only when started. The AT light was on but turned off when I reset the tcm. The TCM and computer are together in 1 for my model, so I cant swap TCM's. ATX Fluid looks a little burned but fully topped off. Theirs a whine to the transmission and a hard thump when it actually goes into gear. Ive gotten it to 3rd gear many times in drive before slipping back or out of gear (still shows being in D on dash, not actually neutral) Drives fine when it actually engages in the gear

Things Ive done:
* reset the TCM/Computer by disconnecting battery, and touching terminals + high beam trick
* bought a brand new battery

Things I cant find:
*Shift sensor
*AT light wont turn back on (changed batteries)
*No check engine light (for now)
*TCM Fuse (if it has one)
Please help

Last edited by Sadface; 03-19-2017 at 02:16 PM.
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