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Old 11-10-2020, 05:52 PM   #1
cachedrive
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Default Is My Transmission Bad or Is This Really a Subaru Thing?

I am a new WRX owner - previously had a 01 2.5 RS / 00 2.5 RS / 99 2.5 RS.
When I engage my clutch pedal 100% down to the floor, my muscle memory is to move the gear shifter into 1st. Everytime I do this in sequence on my 04 WRX, I end up grinding audibly the shifter into 1st gear. I have no idea why. My pedal was 100% engaged / down to the floor but it is like my transmission expects a .02 second delay before engaging the clutch and jamming it into gear. I asked my mechanic and he said that this is a typical 5 speed issue. He said they take a second to put into gear and theres a significant delay in the 1-2 shift as well for some reason. I dont have a 1-2 delay issue but what is going on when I grind my shifter into 1st gear every time from a dead stop? Is this normal?
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Old 11-10-2020, 09:16 PM   #2
Vancouver98STi
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I'd say it's not normal. I have no idea why your mechanic would say it is, unless he doesn't have the ability to properly diagnose the issue.

Does it grind under the same circumstances while going into reverse? If so, perhaps the the clutch isn't fully disengaging, possibly due to air in the clutch hydraulic system.

When's the last time the transmission oil was changed? And what was it that was used? Some lubricants are superior to others.
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Old 11-10-2020, 09:48 PM   #3
littledrummerboy
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Being an 04, how many miles are on that clutch and throwout bearing? The throwout bearing going bad can cause shifting issues... grinding into first sounds like itís not completely releasing.
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Old 11-11-2020, 03:29 AM   #4
SoCoNoHa
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Quote:
Originally Posted by Vancouver98STi View Post
I have no idea why your mechanic would say it is, unless he doesn't have the ability to properly diagnose the issue.
Unfortunately, I think about half the professional mechanics out there are just hacks. Went to tech and got a certificate without much mechanical aptitude or problem solving.

When I bought my LL Bean wagon it had a very loudly whining power steering pump. According to P.O. the mechanic that installed it said that was normal. BS!
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Old 11-11-2020, 03:50 AM   #5
SoCoNoHa
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Sounds to me like the first gear synchro is worn. The synchros are little friction disc thingies that help match shaft speeds inside the trans. If your synchros are toast, you'll do a lot of grinding because the input shaft will be spinning a different speed than the output shaft. When you go to engage the gears, teeth will hit teeth and you'll hear that familiar grind. IF it's the synchro, the trans will have to be disassembled to fix it. Personally I've never had a transmission apart, I'd probably just swap it out if I couldn't live with it.

I've read about people fixing 'crunchy' or 'notchy' feeling shifting with different trans fluids, but I don't necessarily think that's your problem. But I would try the easiest stuff first. Good luck!
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Old 11-11-2020, 01:34 PM   #6
Samurai Jack
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Are you just trying to jam this into gear when you go into first?
That's not how to shift properly.

Like has been said, a number of issues could be contributing to the problem. The more you keep grinding the gears, the more trouble you are causing yourself.

Quote:
Originally Posted by Vancouver98STi
If so, perhaps the the clutch isn't fully disengaging, possibly due to air in the clutch hydraulic system.

When's the last time the transmission oil was changed?
And what was it that was used?
Some lubricants are superior to others.
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Old 11-11-2020, 01:49 PM   #7
rtv900
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Quote:
Originally Posted by cachedrive View Post
it is like my transmission expects a .02 second delay before engaging the clutch and jamming it into gear.
so you are saying .02 seconds solves the problem?

sounds like you have it figured out.
the synchro needs .02 seconds or more to stop the input shaft
either wait .02 seconds or get a brand new transmission
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Old 11-13-2020, 11:36 AM   #8
obiling
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Sound like the same exact symptoms I experience with my car which essentially has a broken 1st gear synchro. If I don't have the clutch FULLY depressed before I move the shifter I get a grind going into first. Just make sure you fully disengaged the clutch and wait a second for the gears to slow and you should be good, just have to adjust your driving.

Even in neutral the gears are spinning so when you disengage the clutch the gears still have enough momentum to continue to spin. You just need to wait a second for them to slow and you should be good.

Last edited by obiling; 11-13-2020 at 12:01 PM.
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Old 11-13-2020, 11:42 AM   #9
Aphex28
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Dealing with Subaru 5 speeds for a while, I've gotten used to going into 2nd gear and then going into first (with the clutch in). I even have done this with my 2 previous 6 speeds even though I don't need to.

Try this trick and it may help you get into first without grinding.
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Old 11-13-2020, 11:56 AM   #10
Jack
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First, this is an ancient car and parts of it are likely worn out. What I'd do to get cheap, easy things out of the way would be to replace the clutch master and slave cylinders. It's not hard to do or overly expensive. In the process, of course, you'll be putting in new brake fluid, so that is out of the way. If this doesn't solve it, then move on to the much more expensive, much more difficult solutions, getting inside the transmission or doing the throwout bearing. Or just live with it.
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Old 11-13-2020, 02:17 PM   #11
Samurai Jack
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Quote:
Originally Posted by Aphex28 View Post
Dealing with Subaru 5 speeds for a while, I've gotten used to going into 2nd gear and then going into first (with the clutch in). I even have done this with my 2 previous 6 speeds even though I don't need to.

Try this trick and it may help you get into first without grinding.
So, you're the guy I hear grinding gears all over town
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Old 11-13-2020, 02:18 PM   #12
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Quote:
Originally Posted by Jack View Post
First, this is an ancient car and parts of it are likely worn out. What I'd do to get cheap, easy things out of the way would be to replace the clutch master and slave cylinders.
If you are looking for these parts, PM me.
I have them for sale and they are only 4 years old.
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Old 11-13-2020, 02:32 PM   #13
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Your first gear synchro is worn. It needs replaced. If you can't afford or don't want to do this, do the following:

Dump the transmission fluid.

Fill with Redline Lightweight Shockproof. Its gonna be an expensive fill but it should help greatly.
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Old 11-14-2020, 01:06 AM   #14
UselessMechanic
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Quote:
Originally Posted by Unabomber View Post
Your first gear synchro is worn. It needs replaced. If you can't afford or don't want to do this, do the following:

Dump the transmission fluid.

Fill with Redline Lightweight Shockproof. Its gonna be an expensive fill but it should help greatly.
I second the synchro failure / solution. Had the synchro for 3rd fail on me, did the above, was a sufficient patch to get me around town.
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Old 11-18-2020, 03:24 PM   #15
clappedoutwag
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cant really say for sure but im thinking its the synchros my 04 will grind going into first even with the clutch all the way in (cant be going more than 10 for it to go into first smoothly) she has 200k miles on her. clutch and throwout bearing are brand new. Take it with a grain of salt
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