mazda 3 at light, problem. fix

[@jacksdad2626]

Thought it was my tcm sent out to fix turned out to be transmission. Had it rebuilt $4300. ouch

[@yzinger9878]

for 4300 why not just get another car? another mazda3 will cost the same

[@jacksdad2626]

The unknown. Rather stick w/ my vehicle & my vehicle history

[@jacksdad2626]

@yzinger9878 another used vehicle is unknown problems. I would rather stick w/the vehicle I have & know the maintenance/history of past problems.

[@tonynamnguyen2893]

Quick question, did you have it rebuilt at a local shop or dealership? I'm about to send mine out this week, I hope it's a TCM not the transmission 😥

[@jacksdad2626]

@@tonynamnguyen2893 local shop rebuilding transmissions only 4 over 50 years

[@carlosescobar5995]

Sorry what was the original problem?

[@stevenpepka8267]

The TCM's in these cars are junk, just get a new factory Mazda control unit. It's a plug and play. I've done 3 dozen or more of these now.

[@javiervelez892]

The problem is that the area is was originally placed overheats the component and basically damages it. It’s a manufacturing mistake and extremely common with these cars.

[@jorgnvonstrangl]

Where did you get a new one?

[@stevenpepka8267]

Dealer

[@geloone]

Hey Steve so although I changed the location and now is working fine with no issues no AT light Or Engine light should I still purchase a new TCM and replace it?

[@stevenpepka8267]

In my opinion it will eventually fail again in the right conditions and it may do it at a bad time. If it was my car, I put a new one in.

[@GMoney-B]

Will this cause any damage to the brake lines after time with jossling and bumps from the added wait of the Tcm tied to the brake lines?

[@jacksdad2626]

No problems yet. The tcm is mere ounces in weight

[@GMoney-B]

@@jacksdad2626 good point. I might make a bracket too just so it doesn’t get banged if I hit a pot hole or bumpy roads. Might not make a bracket even though it would be satisfying to make. Probably won’t. We’ll see. Haha

[@boondocks1able]

No the tcm is really light

[@lsxjay4846]

I did this and it fix my problem now my pcm messing up

[@GMoney-B]

What? Your comment doesn’t make sense. You say it fixed it and it is also messing up?

[@audiboymontalvo3471]

I have the at light on should I change that box ..would that help buddy

[@jacksdad2626]

Most likely or your xmission is gone

[@audiboymontalvo3471]

@@jacksdad2626 your absolutely right that was it .. thanks buddy

[@jacksdad2626]

WILL NOT PURCHASE ANOTHER MAZDA ANYMORE

[@GMoney-B]

Every car is going to have issues of some kind. In my experience I’ve had zero issues on my 12’ m3 since I got it in 14’. Been the best car I’ve ever used. Gotta replace parts eventually or sometimes.

[@jacksdad2626]

@GMoney-B true but not mission at 90k. I will stick w/ TOYOTA most reliable vehicles out there my opinion of course

[@jacksdad2626]

@@GMoney-B agree but not transmission @ 90k , no fuccking way