Twitch de la Brat Posted August 20, 2009 Share Posted August 20, 2009 I just replaced the clutch, transmission and lower ball joints in my 90/91/94 Legacy, and it shudders and shakes when I release the clutch, but only sometimes. If I burn the clutch, it doesn't shake and accelerates smoothly, but if I release the clutch normally, the whole drivetrain moves a significant distance as it shakes, and the car's motion is jerky. I have double, even triple checked my bolts, and they all are tight and everything is attached properly. Grrrr, is this normal or what? Twitch PS: Is it normal for the shifter to be able to touch the driveline when shifting? Link to comment Share on other sites More sharing options...
Log1call Posted August 20, 2009 Share Posted August 20, 2009 It sounds like either a warped flywheel, damaged friction plate, damaged pressure plate or contamination on the friction plate... it's something in the clutch. There is a small chance that the gearbox and engine aren't aligned but this is much more rare. Link to comment Share on other sites More sharing options...
EVOthis Posted August 21, 2009 Share Posted August 21, 2009 Are all the clutch parts new? did you at least get the flywheel resurfaced if not new? Is the clutch adjusted properly? Did you get any liquids or grease or anything on the clutch disc? Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 21, 2009 Author Share Posted August 21, 2009 Are all the clutch parts new? did you at least get the flywheel resurfaced if not new? Is the clutch adjusted properly? Did you get any liquids or grease or anything on the clutch disc? Flywheel was professionally resurfaced and all other clutch parts are brand spanking borgpwarner new. And no contamination, practically did a white glove service. Also, my pilot bearing whines. Twitch Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 New symptom! It shakes and there is an audible rattle or repetitive thudding when I start it. Just like when I'm starting off. And since the clutch has been used a bit more the shuddering has been reduced so I'm guessing it was just because it was a new clutch, but this new symptom is making me think I need to replace my engine mounts. But when I had it apart they seemed just fine.... Any other suggestions? Twitch PS: I did a search and came up with nothing. Link to comment Share on other sites More sharing options...
WoodsWagon Posted August 22, 2009 Share Posted August 22, 2009 You sure the flywheel bolts were tight? Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 Your going to have to take it apart again. nipper Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 You sure the flywheel bolts were tight? Yes, all bolts were tightened to spec and a little over. Your going to have to take it apart again. nipper And please explain before I do. I can't afford to tear this thing down again. Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 If it wasnt doing it before, and it is doing it after, then you have to dig back into it. There is not a hell of a lot of things to go wrong with a clutch that can be repaired externally. It sounds like it can be too thin a flywheel, a bad pressureplate, a broken spring etc. The only other thing it is worth checking is the clutch fork, make sure it is still mounted and in one piece. But the fact that that the noise is getting worse may not give you any choice but to dig into it. nipper Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 If it wasnt doing it before, and it is doing it after, then you have to dig back into it. There is not a hell of a lot of things to go wrong with a clutch that can be repaired externally. It sounds like it can be too thin a flywheel, a bad pressureplate, a broken spring etc. The only other thing it is worth checking is the clutch fork, make sure it is still mounted and in one piece. But the fact that that the noise is getting worse may not give you any choice but to dig into it. nipper Problem is, this car was originally an auto... So anything that crops up now may be severe, or nothing and something I just have to get used to. Like that %#@$*&^!@% squealing pilot bearing. But I did have to make a new spring clip, as I either lost one, or it never came with the donor car. It was made out of spring metal that had about the same properties as the clip. But, the shuddering is happening when starting as well, so could that be motor mounts? Tranny mounts? Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 Ah minor details that are left out. What year is this car? Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 Sorry nip. Its a 90 body, 91 engine, and a 94 tranny. Lets just say this thing has a Carfax rap sheet that'll make a convict look away with shame. I installed the spec clutch for a 90-94 lego, after I verified parts #'s, checking to make sure they didn't change anything on me in those years. I had the flywheel resurfaced the day I put the car back together, ummm Any more details wanted? Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 I was just wondering if the axles are the same for the wuto as the manual. Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 Yes, only one axle was swapped and that was the passenger side front. AFAIK they are interchangeable. Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 Does the noise match engine rpm or vehical speed? Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 Nope. It goes away once the clutch is let out completely or its completely disengaged. But with the clutch completely engaged the clutch pedal vibrates more as I go faster. I thought that was something I need to just get used to... Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 You feel it in the clutch pedal with the clutch engaged? You have no clutch freeplay, check the adjustments at the pedals atc. nipper Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 No, no, different thing. The clutch pedal vibrates whether or not the drivetrain does. And the drivetrain only vibrates when starting the car, or starting off in 1st. Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 You have a few issues here. the clutch pedal vibrating at all timesmeans that there is some force being transmitted thorough the clutch mechanisim to the clutch pedal. The fact that it is a vibration tells me that a- something is not mounted properly in the clutch. Something is pushing up from the pressure plate, up through the fork, through the linkage, to the pedal. b- there is no clutch freeplay Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 You have a few issues here. the clutch pedal vibrating at all timesmeans that there is some force being transmitted thorough the clutch mechanisim to the clutch pedal. The fact that it is a vibration tells me that a- something is not mounted properly in the clutch. Something is pushing up from the pressure plate, up through the fork, through the linkage, to the pedal. b- there is no clutch freeplay Yeah, I'm pretty sure I didn't leave any freeplay in the pedal. I might need to put in some freeplay back in the pedal. But the shuddering is still there when any major force is being applied to the engine or the engine is starting to apply any force. :-\ Twitch Link to comment Share on other sites More sharing options...
nipper Posted August 22, 2009 Share Posted August 22, 2009 There should always be pedal freeplay Now that vibration.... are you sure its not engine related? Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2009 Author Share Posted August 22, 2009 Fairly sure, it doesn't change with the RPMs. Only with vehicle speed. Twitch Link to comment Share on other sites More sharing options...
4x4_Welder Posted August 22, 2009 Share Posted August 22, 2009 Did you put the torque arm back on? Is it in good shape? Do you have all four nuts in place on the trans mount, especially the up-travel stopper with the rubber coated washer? Link to comment Share on other sites More sharing options...
Log1call Posted August 23, 2009 Share Posted August 23, 2009 If you had trouble getting the gearbox into place you may have bent the clutch plate. If the gearbox isn't flush(something between it and the engine, bracket etc for example), it could shudder. Are the two faces tight? Did you position the driveshaft hanger correctly? Sometimes they need a little preload forward or aft to stop shudder. Could first gear have a tooth missing? If you accelerate hard, are their any noises from the box? Any "surging" sensations? Link to comment Share on other sites More sharing options...
nipper Posted August 23, 2009 Share Posted August 23, 2009 If you had trouble getting the gearbox into place you may have bent the clutch plate. If the gearbox isn't flush(something between it and the engine, bracket etc for example), it could shudder. Are the two faces tight? im going with those two (thats where i was heading) Link to comment Share on other sites More sharing options...
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