crod189

So evertime Im in 3rd gear and I shift to 4th at over 4500 rpm it makes this grinding noise that doesnt sound too good. I just changed the transmission fluid thinking it would make it better but it didnt really help. Could it be my tranny going bad??

04RX8man

MT I'm assuming? Does it do it in any other gears? Possibly synchro does it do it all the time or only when it's been driven for awhile?

crod189

yea mt. And no it doesnt do it in any other gears and it pretty much does it all the time if i rev it over 4500 rpm and if i rev it past 6500 the noise is much worst and the grinding is horrible.

mazdaverx7

iTrader: (6)

whats the year and mileage?

crod189

its on 04 with close to 36k miles on it.

Silver06

Yes, it could be (likely) your tranny going bad. Sounds like a bent clutch fork not allowing the gears to positively connect.

It could also (unlikely) be your clutch not disengaging completely due to wear, or a broken clutch pedal bracket.


Year (in-service date) and mileage, please; as this would be covered under Powertrain Warranty.

If it is a clutch fork, they will try to give you a hard time about 'abuse'. Make sure that your car looks un-modified, and that you appear to be a responsible, mature owner. Appearances go a long way. (No burnouts / donuts in the dealership parking lot). LOL.


EDIT: I see you gave the year and mileage above; cool. Do you know when the car was first sold at retail? This would be the date the car's warranty clock started to tick... (You can find it out by calling your dealer, or the MNAO 800 number).

crod189

Well the thing is i bought this car with a salvage title about 4 months ago. I guess i should of thought about it more before the purchase but you could say i was stubborn and wanted the car anyway. I got it because i got it pretty cheap and it was what i could afford only working part time and still finishing up my senior year. So if i go to the dealer they will charge me so much, and all they are going to see is a teenager which will make them think i am an "unresponsible" owner. But i havent raced or done burnouts, donuts ect.

and i really dont know when the car was sold at retail. But either way it has no warrant because of the salvage title.

Silver06

Ahhh.

In that case, look at Mazmart (a forum vendor) for a replacement unit;

or start a thread in the 'parts wanted' section.

I hate to tell you that these things usually get worse.

Good luck.


EDIT: It is really fairly easy to change a transmission yourself. Look at Rotary Resurrections DIY on changing clutch / tranny in 2.5 hourshttps://www.rx8club.com/series-i-tech-garage-22/how-clutch-trans-job-under-2-5-hours-164502/

crod189

So i basically need to start looking for a new transmission huh?

nikkdizzle

iTrader: (2)

yikkes! doesn't sound good at all.
don't mean to thread jack, but i thought it was pointless to start a new thread, just looking for some quick guidance that is.

i too have problems with my 3rd gear. just that when my car is cold, it tends to make this loud *thump* when putting in gear. i dont think it grinds at all. just a loud thump. however, as soon as the car is warm, theres not a problem. is this anything to be alarmed about?

mazdaverx7

iTrader: (6)

a new or used trans would be fine for a replacement. that or you can remove and rebuild your current unit.

crod189

ok thanks. I guess i'll look into that pretty soon.

04RX8man

no warranty?

crod189

it has a salvage title.