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Old 05-08-2000, 10:41 AM   #1
Patrick L
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Join Date: Dec 1999
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Location: Tulsa, OK
Vehicle:
2000 Impreza 2.5RS
Becasue ITS racecar

Post Shifting Problems

I am getting ready to goto the dealer and show them what it is doing. This happens any where between 60-100mph when shifting into 5th gear. Normally I am at about 80mph shifting from 4th to 5th and what do I get. A hard shift to 5th with a slight grind of the gear. It's real short and quick but is bothering the HECK out of me. Has anyone else had this problem?
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Old 05-08-2000, 11:07 AM   #2
efoo
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KC, you might just be shifting too fast. The syncros have to mesh up and transfer energy around before the transmission catches up to the driveshaft after all. I can grind my shifter at will - I've found that it's not good to "hurry" the shift too fast or the driveshaft doesn't drop enough rpm. So the syncros won't let you shift and you get the grinding noise. If I'm going at really high rpm in lower gear, say > 5K at 2nd, and I try to shift to 3rd before the tach drops before 4500 or so, I can pretty much always get a grind.

At least, that's my own experience. But it sounds very similar to yours.

-edwin
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Old 05-08-2000, 11:08 AM   #3
ColinL
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Post

could be, but if he has a 2000 then I'd be worried it's the fairly well documented transmission problem. more than a few 2000's have experienced grinding into 5th or 3rd.
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Old 05-08-2000, 01:09 PM   #4
HomerJay
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I noticed a slight grind going into 3rd and 5th in my 2000RS when I first got it, but now the car shifts beautifully. In fact, it's easier to shift at higher rpm's than it is at lower. During spirited driving, I shift about 5500 and haven't noticed a problem.
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Old 05-08-2000, 02:05 PM   #5
boxerman
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I have a 00. No problems with 5th or third, and I will often shift quickly after banging the rev limiter. I consider 4000rpm short shifting, I stay in 4th below 70, and yes I get terrible milage.

No offense meant, but are you shifting with a deliberate dogleg motion? If I get sloppy, I can feel the lever nicking the gate but I haven't gotten any grinding. Sometimes I will double clutch, but I haven't had a problem when I don't either.

I have seen others post problems and get thier entire transmissions replaced. Have any of these problems turned out to be linkage adjustments?

With all my old cars, linkage and worn shifter bushings (and clutch freeplay) are the first place to suspect when you have trouble hitting gears.

Or is that another aspect of automotive technology that has passed me by in the last 20 years. 100,000mi between tune ups, hey where's the distributor?(forget about points), I can't find the carburator, someone left their PC under my hood, and now, shift linkages that never need adjusting. Soon they will come up with brakes that pump-themselves and transmissions that automatically shift.

Tim

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Old 05-08-2000, 04:18 PM   #6
ImprezaTs
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Hey I got some problem with my 3rd gear when I shift it in at 4500-5000rpm it grinds like hell....
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Old 05-08-2000, 04:48 PM   #7
8Complex

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No problems with my MY00 RS yet, 3100 miles on the clock and I drive it pretty damn hard. Maybe you people just aren't beating your transmission enough.
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Old 05-08-2000, 05:12 PM   #8
Tarmac RS
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Hey guys, I have the same problem with my '00 RS.

When it was new fifth gear had a very tough feel to it so I was gentle with it, I thought it would just break in over time. It started out just feeling notchy, but now it is a definite synchro grind at anything above 45mph.

Third gear is getting the same notchy feel to it and I suspect its on its way to where fifth gear went. At a certain speed it will grind ever so slightly.

For those who are having this problem, you can work around the grinding of 5th gear by shifting from 4th to neutral letting the clutch out, clutching again and then moving into 5th. A neutral to fifth shift uses a different set of synchros and it will not grind. This is effectively "double-declutching" the shift which is normally done during a downshift.

The above maneuver may save your tranny until the dealer can fix it. I stopped by my dealer earlier this week and he ordered parts for my car, not sure how many others have had this problem yet, but I have a feeling its gonna be a popular one. My car just turned 11k miles this week...

Not sure if its weak components that are causing it or the fact that the car has a hydraulic clutch this year. Mine didnt get grinddy until I took a road trip and put on some highway miles possibly heating/boiling the fluid and causing the clutch not to fully disengage between shifts.

Will know more after the dealer fixes it, until then Im double de-clutching 4th / 5th
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Old 05-08-2000, 05:18 PM   #9
Pilot
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MY00RS just turned 20K (holy cow! 20K since the end of November!)

Anyway no grinding, but the I alway double D on the way down, fifth and third seem to be a little notchy though.

Boxerman,
Last year I changed the shift lever, and the bushings in my 951S. Is an 88' old?

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Old 05-08-2000, 08:27 PM   #10
RallyGuy2k
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I just turned 4k on my MY00 and have had no problems. (knock on wood) Once in a great while I'll grind going into reverse. I assume that's not unusual since reverse synchros aren't the same as the forwards.
Tre'
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Old 05-08-2000, 08:44 PM   #11
Patrick Olsen
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1997 Legacy 2.5GT
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I have an occasional grind going into 4th at high RPMs, only occurs when the transmission is at or above normal operating temp (been driven for a while). It started soon after I began playing with my transmission fluid. It seems somewhat better now that I'm using Redline 75W90NS rather than their regular 75W90.

It's not just me being too quick with my shift (by the way, what kinda crap is that? My poor, abused, 92000 mile Mustang transmission lets me shift as fast as I want with no protests whatsoever!). I've tried putting the clutch in and deliberately waiting for about 1-2sec, then moving the lever to 4th and it will still happen. It grinds as I move the stick to 4th, not as I let the clutch out. Eventually I'll get the dealer to take a look at it, but first I have to get the aforementioned Mustang back into a driveable state.

Pat Olsen
'99 Legacy 2.5GT 5 speed sedan
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Old 05-08-2000, 08:52 PM   #12
Ver.III
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I had that going into 5th prob on my 99RS. Its okay when cold but after it warms up it grinds into 5th. I double clutched to get around the problem. I even tried Redline but it was still there. I eventually took the tranny apart and I suspect that the 5th syncro was worn. My freind also had this problem and the dealer replaced 5th gear and a new syncro. Maybe there is a defect in the machining of the 5th gear and syncro.
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Old 05-08-2000, 09:43 PM   #13
Tarmac RS
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I agree, I can get a clean shift for the first ten minutes, but after that the speed at which it grinds becomes lower.

After the point it starts it doesnt matter how long I hold in the clutch, how closely I match the rev's, nuttin...

Im not so sure its a defect, I think its more the fact that FHI is being as cheap as they can get away with.
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Old 05-08-2000, 11:13 PM   #14
Patrick L
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Becasue ITS racecar

Smile

Thanks for the help Guys. I posted this message before I left for work and got a good response. Like Colin said, I have a MY00 RS. I forgot to say that, but I see what I need to look at and ask the dealer. I didn't make it to the dealer on Monday but I am going to try on Tuesday. I have a Kartboy short shifter and I can shift the tranny REAL quick and have no problem till I shift from 4th to 5th at high RPMs after it's warmed up. That's when I get the slight grind. I have just over 10,000 miles on it.

Thanks for the help

KC_TopDog

[This message has been edited by KC_TopDog (edited May 08, 2000).]
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Old 11-07-2000, 12:26 AM   #15
Vitamin-K
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I revive this post. I have the same 5th gear problem. The only way it wont grind going into 5th is if i d-clutch it. Mines a 2001 (at least that what was written on the dealer temp-license plate) and i barely have 2600 miles on it. guess il be making a trip to the dealer. thanks.
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