4th gear grinding

SubySteve · 03-15-2006, 10:37 AM

Lately when I shift into 4th at high rpms I am grinding alittle. So I am assuming my sychro is on its way out. Do you guys think with the mods I have and only 26000 miles, Subaru will warrenty it. If not what do you think its giong to cost me.

pantag · 03-15-2006, 11:55 AM

What mods? I don't think the dealership will dare to blame the tranny grinding to the turboback. Just don't tell them that you have EM and load the stock realtime map to the ECU. Take it to the dealer and have faith.

KiTsuNe · 03-15-2006, 11:57 AM

same problem with me, 4th gear sometimes grinds but usually it doesnt. Just 4th mind you.

Toofast22 · 05-26-2008, 09:40 PM

When I am under hard acceleration shifting into 4th gear i feel a lil resistance when i shift into 4th, doesnt make a grinding sound but it feels like theres resistance and a small vibration shifting into 4th. Is that like a partial grind?

subysti5486 · 08-01-2008, 03:01 PM

i have the exact same problem, i have an appointment with the dealership this thursday.I am stage 2; do you think i should put the stock dp back on or just try to go like it is?

Toofast22 · 08-01-2008, 03:03 PM

Quote:

Originally Posted by subysti5486

i have the exact same problem, i have an appointment with the dealership this thursday.I am stage 2; do you think i should put the stock dp back on or just try to go like it is?

I would put the stock downpipe back on just to be safe. Mine has gone away though when I shift at redline I just shift a tad bit slower and more smoothly. Seemed to work for me.

I still think it will be a problem in the future though.

amg destroyer · 08-01-2008, 03:31 PM

Would they cover it if I have a short shifter + bushings installed? I'm guessing no...

adidasboy1186 · 08-05-2008, 05:59 PM

how many miles since your last tranny fluid change? Could need some new fluid...

polyol · 08-05-2008, 07:22 PM

My 5th gear syncros went out and the dealership replaced it under warrenty even though I was stage2. They said they would open it up and check for abuse...they did and covered it. 4th and 5th gear syncros going out on on on 04/05 STi's are quite common place.

Usually syncros go out on 1st or 2nd gears...not top end gears.

subysti5486 · 08-05-2008, 07:26 PM

well i changed my clutch about six months ago and had to add some gear oil to it i just added some autozone gear oil and im sure thats what caused it but im gonna have the dealer change out the synchros just to make sure

03-15-2006, 10:37 AM	#1
SubySteve STI Driver Car: 04 Subaru WRX STi Fav Mod: Coming Soon Location: HOLLYWOOD,FL Posts: 266 Join Date: Jul 2005 Trader Rating: (0)	4th gear grinding Lately when I shift into 4th at high rpms I am grinding alittle. So I am assuming my sychro is on its way out. Do you guys think with the mods I have and only 26000 miles, Subaru will warrenty it. If not what do you think its giong to cost me. This ad is not endorsed by this member. Please register or login to hide this ad.

05-26-2008, 09:40 PM	#4
Toofast22 Senior STI Driver Car: WRB 05 WRX STi Fav Mod: Easter Bunny Location: Illinois Posts: 389 Join Date: Feb 2008 Trader Rating: (0)	Re: 4th gear grinding When I am under hard acceleration shifting into 4th gear i feel a lil resistance when i shift into 4th, doesnt make a grinding sound but it feels like theres resistance and a small vibration shifting into 4th. Is that like a partial grind?

08-01-2008, 03:01 PM	#5
subysti5486 Junior STI Driver Car: wrb 05 sti Fav Mod: my future DOM III+ METH Location: tulsa, ok Posts: 139 Join Date: Nov 2007 Trader Rating: (0)	Re: 4th gear grinding i have the exact same problem, i have an appointment with the dealership this thursday.I am stage 2; do you think i should put the stock dp back on or just try to go like it is?

08-01-2008, 03:31 PM	#7
amg destroyer Iron Fisted Car: '05 STi Fav Mod: Sparco seat Location: OC Posts: 4,188 Join Date: Sep 2006 Trader Rating: (4)	Re: 4th gear grinding Would they cover it if I have a short shifter + bushings installed? I'm guessing no...

08-05-2008, 05:59 PM	#8
adidasboy1186 Junior STI Driver Car: WR Blue 06 Sti Fav Mod: no muffler haha Location: Fort Benning GA Posts: 130 Join Date: Mar 2008 Trader Rating: (1)	Re: 4th gear grinding how many miles since your last tranny fluid change? Could need some new fluid...

03-15-2006, 11:55 AM	#2
pantag Spec C Club Car: 06 Subaru WRX STi Fav Mod: My right foot... Location: Waterford CT Posts: 1,996 Join Date: Nov 2004 Trader Rating: (1)	What mods? I don't think the dealership will dare to blame the tranny grinding to the turboback. Just don't tell them that you have EM and load the stock realtime map to the ECU. Take it to the dealer and have faith.

03-15-2006, 11:57 AM	#3
KiTsuNe Spec C Club Car: The Vroom-mobile Fav Mod: JDM Gears Location: San Jose, California Posts: 2,334 Join Date: Jun 2005 Trader Rating: (1)	same problem with me, 4th gear sometimes grinds but usually it doesnt. Just 4th mind you.

08-05-2008, 07:22 PM	#9
polyol Spec C Club Car: 04 STi Fav Mod: Motor Mounts Location: Eugene Posts: 2,268 Join Date: Oct 2004 Trader Rating: (0)	Re: 4th gear grinding My 5th gear syncros went out and the dealership replaced it under warrenty even though I was stage2. They said they would open it up and check for abuse...they did and covered it. 4th and 5th gear syncros going out on on on 04/05 STi's are quite common place. Usually syncros go out on 1st or 2nd gears...not top end gears.

08-05-2008, 07:26 PM	#10
subysti5486 Junior STI Driver Car: wrb 05 sti Fav Mod: my future DOM III+ METH Location: tulsa, ok Posts: 139 Join Date: Nov 2007 Trader Rating: (0)	Re: 4th gear grinding well i changed my clutch about six months ago and had to add some gear oil to it i just added some autozone gear oil and im sure thats what caused it but im gonna have the dealer change out the synchros just to make sure This ad is not endorsed by this member. Please register or login to hide this ad.