2nd to 3rd gear shifting problems. gear synchronizer maybe?

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wetwilly871

Member

• Apr 21, 2011

• #1

I'm new hear, 1st post w00t! I've spent the last hour looking for the answer. I stumbled upon a thread that another member had who said his gear synchronize was shot. Anyways that sounded similar, but I'm not sure what that means exactly. I have a 2005 mazda3 sedan. When I shift from 2nd to 3rd I can feel it grind. I didn't think much of it, because I've had this problem before in another car and nothing happened. About 2 days ago when I shifted it just spit the gear back out. Now it happens pretty frequently. I was wondering if it is the gear synchronizer, and if so how much would this typically run to have it fixed?

 

M

mudguy

Member

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2006 mazda 3 sport 5door

• Apr 26, 2011

• #2

it sound like the sycro,there have been a few problems with them..

 

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Big Wheel

Member

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'05 Mazda3 2.3

• Sep 5, 2011

• #3

Any news? I'm having issues going from 3 to 4 consistently...anyone have some suggestions for Replacement synchros, or gear sets? GTX was mentioned in another thread....

 

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rdemattio

Member

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2008 Mazda 3 I Sport

• Sep 8, 2011

• #4

when i go from 1st to 2nd and 2nd to 3rd I will randomly get a little grind, this is rare though. How many miles you got?

 

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Big Wheel

Member

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'05 Mazda3 2.3

• Sep 9, 2011

• #5

I've got 89k and change miles. . .as for gear oil, there's Mazda OE fluid in there, not sure if/when it's been changed. I have the grinding when completing shifts from 4-to-3, and on occaision 2-to-3, when I'm running at 6k+ RPM.

I'd be open to any suggestions on updating/grading the gear oil to help this, before I consider a tranny rebuild/swap.

 

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Nir

Member

• Oct 26, 2011

• #6

change your oil. go with 75w90 syncromesh. from Penzoil, or maybe Aral if you find any. I did it and all my problems went away.

 

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SC_Mazda3

Member

Contributor

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2008 Mazda 3s Hatch 5 spd.

• Oct 26, 2011

• #7

anybody notice a problem of shifting from first to second? feels like it catches when I shift quickly. Have had several misshifts and grind gears... have 50k on my tranny and as far as I know still the oe fluid

 

sunkAlias

Member

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NH/MA

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2023 CX-5

• Oct 26, 2011

• #8

Change the fluid, i just did mine with mobil1 synthetic and it's even smoother than before. My protege catches 2nd quickly, try to get used to it by practicing slow 2nd gear shifts.

 

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SC_Mazda3

Member

Contributor

:

2008 Mazda 3s Hatch 5 spd.

• Oct 26, 2011

• #9

ok, thanks.