Random T56 sounds/troubles....please give me insight
12-13-2007, 05:24 AM
#1
Random T56 sounds/troubles....please give me insight Hey all. My T56 has 87k miles on it. I believe there is a stock clutch in there too. I don't really know to be honest- bought the car used. I'm having some random sounds/issues:
1. There is "bearing" type noise when the car is in neutral and the pedal is not depressed. Sounds like a whoosh/grind sound. Don't know how to explain it.
2. Sometimes with the clutch fully pressed in the trans will grind slightly when putting it into gear
3. Sometimes it is a little tough to get it into some gears, mainly 1st
Ideas? The clutch engages pretty high which tells me its on its last leg. I'm also thinking its the throwout bearing making that "bearing" noise as noted in #1. And I'm wondering if the trans is okay with problem #3, or if that happens because of a worn clutch? The clutch master was apparently replaced with 01+ hydraulics. I will cross reference any part numbers to verify that. Car is a 98' TA. Yes, I read the stickys. Looking for some input to back me up before I begin replacing things.
My plan of attack is to replace the clutch, slave cylinder, pilot bearing (due to mileage). If the grinding still occurs, or if the bearing noise persists, then it should warrant a trans rebuild.
Let me know!
Andy
1. There is "bearing" type noise when the car is in neutral and the pedal is not depressed. Sounds like a whoosh/grind sound. Don't know how to explain it.
2. Sometimes with the clutch fully pressed in the trans will grind slightly when putting it into gear
3. Sometimes it is a little tough to get it into some gears, mainly 1st
Ideas? The clutch engages pretty high which tells me its on its last leg. I'm also thinking its the throwout bearing making that "bearing" noise as noted in #1. And I'm wondering if the trans is okay with problem #3, or if that happens because of a worn clutch? The clutch master was apparently replaced with 01+ hydraulics. I will cross reference any part numbers to verify that. Car is a 98' TA. Yes, I read the stickys. Looking for some input to back me up before I begin replacing things.
My plan of attack is to replace the clutch, slave cylinder, pilot bearing (due to mileage). If the grinding still occurs, or if the bearing noise persists, then it should warrant a trans rebuild.
Let me know!
Andy
12-13-2007, 06:59 AM
#2
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I don't want to spend your money, but if you're going to pull an 87K trans out to begin with, it wouldn't hurt to freshen it up once you've already gone through that pain.
12-13-2007, 07:08 AM
#3
I'm not sure if I would agree with that assessment. Most people on this board would kill for a high pedal.
That's a safe bet. Although, it could probably last another 100K miles even making that noise, but if you're intending to pull the trans there is no reason to leave it in there.
This is a little tougher since it seems the clutch and/or hydraulics are OK with a high pedal. Have you bled or flushed the fluid lately? Does the fluid look black or clear? If you have the car in 1st with the clutch depressed, does it creep as you bring up the RPM? If the fluid is OK and the car doesn't creep, it's looking more and more like a trans issue.
I don't want to spend your money, but if you're going to pull an 87K trans out to begin with, it wouldn't hurt to freshen it up once you've already gone through that pain.
That's a safe bet. Although, it could probably last another 100K miles even making that noise, but if you're intending to pull the trans there is no reason to leave it in there.
This is a little tougher since it seems the clutch and/or hydraulics are OK with a high pedal. Have you bled or flushed the fluid lately? Does the fluid look black or clear? If you have the car in 1st with the clutch depressed, does it creep as you bring up the RPM? If the fluid is OK and the car doesn't creep, it's looking more and more like a trans issue.
I don't want to spend your money, but if you're going to pull an 87K trans out to begin with, it wouldn't hurt to freshen it up once you've already gone through that pain.
I agree it may be worth the time and money to just rebuild the trans and replace everything to be done with it.
Andy
12-13-2007, 07:33 AM
#4
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The car moves forward (in a forward gear, of course) as the RPM is increased with the clutch depressed. This would illustrate that the clutch has not fully disengaged and could lead to the hard shifting problems you are experiencing.
12-13-2007, 07:39 AM
#5
It does not creep. It only has a high engagement leading me to believe there is not too much clutch material left. And sometimes the trans will make a grind noise with the clutch pedal fully depressed telling me the throwout bearing isnt fully disengaging the clutch?
12-13-2007, 07:50 AM
#6
The throwout bearing would be more likely to make noise with the clutch pedal pressed. The first thing I would check is the fluid level in the transmission itself. A low fluid level could cause the hard shifting, especially into first, and would also cause some bearing noise over time.
12-13-2007, 07:55 AM
#7
The throwout bearing would be more likely to make noise with the clutch pedal pressed. The first thing I would check is the fluid level in the transmission itself. A low fluid level could cause the hard shifting, especially into first, and would also cause some bearing noise over time.
Thanks
Andy
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12-13-2007, 08:49 AM
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12-20-2007, 09:22 AM
#12
I put some Mobil 1 synthetic oil in there. The old oil wasn't dark, but at least I know that it is fresh and new. The sound has decreased. Who knows. I am banking on a rebuild and new clutch this spring anyways. I will just baby the trans until then.
Andy
Andy
12-20-2007, 11:31 AM
#13
did you change the hydraulic fluid for the clutch, or did you change the transmission fluid?
Also a high engaging clutch doesn't mean much, my stocker was around the 80% released range when the clutch engaged but on inspection on removing had almost 2/3 as much material as the LS7 clutch that replaced it (wear wise).
My Ls7 clutch with 01-02 hydraulics engages around the 70% pedal travel mark. Not as high as stock LS1 travel, but a big difference from the "it engages right off the floor" feel it had when I first put it in.
Also if it's out, a rebuild should be in your mind, do it all at once. The stage 1 kit from Sixspeeds covers 700ft/lb and 700hp... and will satisfy 90% of the LSx cars that are on the roads these days. Very few need to spend big $$$ for the higher kits.
Also a high engaging clutch doesn't mean much, my stocker was around the 80% released range when the clutch engaged but on inspection on removing had almost 2/3 as much material as the LS7 clutch that replaced it (wear wise).
My Ls7 clutch with 01-02 hydraulics engages around the 70% pedal travel mark. Not as high as stock LS1 travel, but a big difference from the "it engages right off the floor" feel it had when I first put it in.
Also if it's out, a rebuild should be in your mind, do it all at once. The stage 1 kit from Sixspeeds covers 700ft/lb and 700hp... and will satisfy 90% of the LSx cars that are on the roads these days. Very few need to spend big $$$ for the higher kits.
12-20-2007, 12:21 PM
#14
did you change the hydraulic fluid for the clutch, or did you change the transmission fluid?
Also a high engaging clutch doesn't mean much, my stocker was around the 80% released range when the clutch engaged but on inspection on removing had almost 2/3 as much material as the LS7 clutch that replaced it (wear wise).
My Ls7 clutch with 01-02 hydraulics engages around the 70% pedal travel mark. Not as high as stock LS1 travel, but a big difference from the "it engages right off the floor" feel it had when I first put it in.
Also if it's out, a rebuild should be in your mind, do it all at once. The stage 1 kit from Sixspeeds covers 700ft/lb and 700hp... and will satisfy 90% of the LSx cars that are on the roads these days. Very few need to spend big $$$ for the higher kits.
Also a high engaging clutch doesn't mean much, my stocker was around the 80% released range when the clutch engaged but on inspection on removing had almost 2/3 as much material as the LS7 clutch that replaced it (wear wise).
My Ls7 clutch with 01-02 hydraulics engages around the 70% pedal travel mark. Not as high as stock LS1 travel, but a big difference from the "it engages right off the floor" feel it had when I first put it in.
Also if it's out, a rebuild should be in your mind, do it all at once. The stage 1 kit from Sixspeeds covers 700ft/lb and 700hp... and will satisfy 90% of the LSx cars that are on the roads these days. Very few need to spend big $$$ for the higher kits.
I changed the transmission fluid only. I am planning on a rebuild this spring as well as a new clutch. I will also flush the hydraulic fluid at that time with a new slave.
Thanks
Andy
