Transmission problem: Pressure Plate or Syncro? HELP
05-02-2006, 02:45 PM
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Transmission problem: Pressure Plate or Syncro? HELP
So, after doing a smooth exhaust swap with a fellow rx8club member, i took the car out for a quick spin... i went through the gears and notied the car was a lot quieter (removed borla, put in stock) -- so i pushed the car to about 7.5k/rpm after about 5 minutes of smooth driving... if it has anything to do w/ it, i got some bad wheel hop in 1st gear...
when i pushed the car hard, i recognized that from 2nd gear on Over 4k/rpm, the car would make a metal-on-metal rubbing/spinning noise... I didn't know what it was so i decided to take it easy and run 5more minutes of smooth driving.
In my attempt to parallel park, i put it into reverse -- and as soon as the clutch grabbed, the shiftknob would "pop-out" slightly to the edge and the gear would grind... like i wasn't fully engaged.
Then, i realized the shiftknob pops out, so i HELD IT BACK in reverse and tried again. When i hold the gear down, it does not pop out, but i hear a distinct "CLINK" sound and the car does engage in reverse without grinding or problems... but i have to hold the gear down.
UPDATE ON PROBLEM LIST
so, since we know the problems-- do you guys think it's any of these:
1. Transmission bearing
2. Linkage problem... w/ the detents
3. Shifter itself--something bent below the pivot or w/ the internal pivot itself...
4. broken clutch disk spring
5. loose pressure plate bolts
6. bent shifting fork
7. mainshaft retention ring is broken...therefore, the mainshaft is not engaging
We do know that the shiterball cup did not slip up on the retaining clip -- therefore causing trouble engaging the interlock (correct)? This is my assumption b/c the short shifter (AFE) does not have a broken cup on the bottom and i actually have the kevlar tan cup on the bottom of the shifterball....
help please.
when i pushed the car hard, i recognized that from 2nd gear on Over 4k/rpm, the car would make a metal-on-metal rubbing/spinning noise... I didn't know what it was so i decided to take it easy and run 5more minutes of smooth driving.
In my attempt to parallel park, i put it into reverse -- and as soon as the clutch grabbed, the shiftknob would "pop-out" slightly to the edge and the gear would grind... like i wasn't fully engaged.
Then, i realized the shiftknob pops out, so i HELD IT BACK in reverse and tried again. When i hold the gear down, it does not pop out, but i hear a distinct "CLINK" sound and the car does engage in reverse without grinding or problems... but i have to hold the gear down.
UPDATE ON PROBLEM LIST
so, since we know the problems-- do you guys think it's any of these:
1. Transmission bearing
2. Linkage problem... w/ the detents
3. Shifter itself--something bent below the pivot or w/ the internal pivot itself...
4. broken clutch disk spring
5. loose pressure plate bolts
6. bent shifting fork
7. mainshaft retention ring is broken...therefore, the mainshaft is not engaging
We do know that the shiterball cup did not slip up on the retaining clip -- therefore causing trouble engaging the interlock (correct)? This is my assumption b/c the short shifter (AFE) does not have a broken cup on the bottom and i actually have the kevlar tan cup on the bottom of the shifterball....
help please.
Last edited by efini_8; 05-04-2006 at 07:57 PM.
05-02-2006, 02:50 PM
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oh shizzzle snazzle frazzzle dazzle...
Sounds like the plate, maybe a bad install. Mistorqued bolts will back out after a while. But who knows until you get it lifted and the tranny yank'd out. Looks like your gonna be takin a trip to a mechanic
Sounds like the plate, maybe a bad install. Mistorqued bolts will back out after a while. But who knows until you get it lifted and the tranny yank'd out. Looks like your gonna be takin a trip to a mechanic
05-02-2006, 03:27 PM
#3
Rotary Wanker
Reverse doesn't have any synchronizers. The metal on metal grinding over 4K could be a transmission bearing (not the throwout bearing). Are you sure it's not a problem with your linkage?
Last edited by Ericok; 05-02-2006 at 03:31 PM.
05-02-2006, 07:21 PM
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I don't know... up to know there hasn't been a problem (in the 3k driven). i did notice that when i rode the clutch for a longer time than expected, it would make a distinct rubbing sound.
i forgot to mention that when i took the car for the quick run after the install -- under full throttle, i got massive wheel hop and noticed the problem after that...
suggestions?
i forgot to mention that when i took the car for the quick run after the install -- under full throttle, i got massive wheel hop and noticed the problem after that...
suggestions?
05-02-2006, 08:13 PM
#5
Rotary Wanker
Not following you problem too clearly but: When you shif into any gear, the linkage operates a lever which is held in place by detents. Once the detents are engaged, the transmission is held in gear. Jumping out of gear means that you're not fully engaging the gear (in the case of reverse) or the synchronizer isn't fully locked (in the case of the forward gears). That all suggests a linkage problem (or maybe engine mounts aren't holding the engine in place and the engine movement is shifting for you). Wheel hop, although interesting, doesn't reveal much. You can get plenty of wheel hop on a perfectly functioning drivetrain. Wheel hop usually indicates inadequate dampening, lack of axle control (whch is engineering or design related), something bent or driveline windup. Lastly, some people have complained about RX-8 flywheel bolts backing out and creating a loose flywheel (which may explain the wheel hop - although, no one's complained about wheel hop before). If it's not any of these, you have to go inside the transmission to find the problem.
05-02-2006, 09:52 PM
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Well sounds like either way the trans is coming out. Does any of you have an 05 with the auto trans? If so, can anyone tell me what the popcorn noise is in 2nd gear only at 5000 rpm. It wont do it in manual mode, just the regular mode. Any help would be good, going to the dealer on Fri to see what they come up with. It has about 4200 miles on it.
05-02-2006, 10:01 PM
#10
Originally Posted by efini_8
ERICOK:
thanks for the help... i think it is the detent
For a chronological order of what happened... this is the case:
1. drove 5 minutes easy
2. at 14mph roll, dropped the clutch at 7500rpm (got some real bad wheelhop)
3. noticed that 2nd, 3rd gears made a whining noise (sandpaperish) at 4k/rpm and above
4. drove easy for 5 minutes and rubbing noise seemed to come and go
5. tried to park... put into reverse, and once the clutch engaged, the shiftknob popped out slightly causing the gears to grind.... (bad bad sound)
6. held shifter in place (reverse) with force, and makes ONE click/pop noise but REVERSE engages and i can back up...
any ideas now>?
thanks for the help... i think it is the detent
For a chronological order of what happened... this is the case:
1. drove 5 minutes easy
2. at 14mph roll, dropped the clutch at 7500rpm (got some real bad wheelhop)
3. noticed that 2nd, 3rd gears made a whining noise (sandpaperish) at 4k/rpm and above
4. drove easy for 5 minutes and rubbing noise seemed to come and go
5. tried to park... put into reverse, and once the clutch engaged, the shiftknob popped out slightly causing the gears to grind.... (bad bad sound)
6. held shifter in place (reverse) with force, and makes ONE click/pop noise but REVERSE engages and i can back up...
any ideas now>?
and btw ... clutch dump at 7.5 k rpm is stupid... rolling or not...
beers
05-02-2006, 10:18 PM
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Originally Posted by Ericok
Are you sure it's not a problem with your linkage?
05-02-2006, 10:40 PM
#12
Rotary Wanker
I know the shifter goes straight into the gearbox but could be something bent below the piviot or with the internal pivot itself. Anything else with the gearbox you have to go inside.
Didn't Car & Driver say that dumping the clutch at 7,500rpm was how they got their fastest 1/4 mile time? Not that I'm recommending it - especially when YOU'RE making the payments.
Didn't Car & Driver say that dumping the clutch at 7,500rpm was how they got their fastest 1/4 mile time? Not that I'm recommending it - especially when YOU'RE making the payments.
05-02-2006, 10:44 PM
#13
Originally Posted by Ericok
I know the shifter goes straight into the gearbox but could be something bent below the piviot or with the internal pivot itself. Anything else with the gearbox you have to go inside.
Didn't Car & Driver say that dumping the clutch at 7,500rpm was how they got their fastest 1/4 mile time? Not that I'm recommending it - especially when YOU'RE making the payments.
Didn't Car & Driver say that dumping the clutch at 7,500rpm was how they got their fastest 1/4 mile time? Not that I'm recommending it - especially when YOU'RE making the payments.
5k and feather,,, now harm no foul..
beers
05-03-2006, 12:43 AM
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Possible Problems:
1. transmission bearing
2. linkage problem --> detent
3. shifter: something bent below the pivot or w/ the internal pivot itself
4. broken clutch disk spring
Can all/any of the problems listed above be correlated to my Reverse Gear not fully engaging if not held in place??? It's just my reverse that won't engage by itself unless i hold it in place...
:sigh:
price range to repair? will warranty cover this?
1. transmission bearing
2. linkage problem --> detent
3. shifter: something bent below the pivot or w/ the internal pivot itself
4. broken clutch disk spring
Can all/any of the problems listed above be correlated to my Reverse Gear not fully engaging if not held in place??? It's just my reverse that won't engage by itself unless i hold it in place...
:sigh:
price range to repair? will warranty cover this?
05-03-2006, 01:10 AM
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Dan--thank you for the help.
I also forgot to mention that the travel in putting the shifter into reverse seems noticeably shorter.
Additionally, i have the AFE short shifter on the car.
My clutch pedal is not stiff
Engaging in all forward gears does not pose a problem
:blah:
After speaking to the highly knowledgeable Dannobre, my problem sounds a lot like the problem he experienced with the shifter... I hope to GOD that that's the problem b/c my college debt is killing me...
Once again, thanks dan -- you don't understand the extent of my gratitude.
I also forgot to mention that the travel in putting the shifter into reverse seems noticeably shorter.
Additionally, i have the AFE short shifter on the car.
My clutch pedal is not stiff
Engaging in all forward gears does not pose a problem
:blah:
After speaking to the highly knowledgeable Dannobre, my problem sounds a lot like the problem he experienced with the shifter... I hope to GOD that that's the problem b/c my college debt is killing me...
Once again, thanks dan -- you don't understand the extent of my gratitude.
Last edited by efini_8; 05-03-2006 at 01:51 AM.
05-03-2006, 07:39 AM
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OK, now that we know that you have Richards shifter, I need a little more info.
When did you buy the shifter?
How many miles has it done?
Does it have a black "cup" on the ball of the shifter that goes into the gearbox?
Does it have a "buff, manilla folder, tan" colored one?
When did you buy the shifter?
How many miles has it done?
Does it have a black "cup" on the ball of the shifter that goes into the gearbox?
Does it have a "buff, manilla folder, tan" colored one?
05-03-2006, 07:53 AM
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hey efini, i had a similar problem with my 8 last year. i had lost not only reverse, but 1st as well, and when i would try to let the clutch out in these gears, the shifter would pop out, even if i tried to hold it in
dont drive the car anymore. get it to the dealer. what happened was the mainshaft retention ring shattered and the main shaft wasnt staying in the correct position. it ended up causing me to be stuck in 6th gear, and the only way to get in neutral was to push the clutch in. i was stuck on the highway at 9 at night, and had to burn the hell out of the clutch to get home.
luckily my service writer is very good and got the clutch covered under warranty.
dont drive the car anymore. get it to the dealer. what happened was the mainshaft retention ring shattered and the main shaft wasnt staying in the correct position. it ended up causing me to be stuck in 6th gear, and the only way to get in neutral was to push the clutch in. i was stuck on the highway at 9 at night, and had to burn the hell out of the clutch to get home.
luckily my service writer is very good and got the clutch covered under warranty.
05-03-2006, 08:17 AM
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it ended up causing me to be stuck in 6th gear, and the only way to get in neutral was to push the clutch in
I've had numerous transmission issues myself. The best thing to do is get it to the shop ASAP. Let them deal with it. Good luck!
05-03-2006, 09:26 AM
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Originally Posted by Slims8
Maybe I'm misunderstanding, but how do you usually get it in Neutral?
I've had numerous transmission issues myself. The best thing to do is get it to the shop ASAP. Let them deal with it. Good luck!
I've had numerous transmission issues myself. The best thing to do is get it to the shop ASAP. Let them deal with it. Good luck!
05-03-2006, 05:43 PM
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Originally Posted by Slims8
Maybe I'm misunderstanding, but how do you usually get it in Neutral?
I've had numerous transmission issues myself. The best thing to do is get it to the shop ASAP. Let them deal with it. Good luck!
I've had numerous transmission issues myself. The best thing to do is get it to the shop ASAP. Let them deal with it. Good luck!
I actually had that problem once with reverse popping out, but I think it was just my stupidity as i probably shifted halfway or something
05-04-2006, 06:59 PM
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Hi everyone...
as for the shifter, it's got the black ball in it...
as for not driving the car, i have to put at least 300miles before putting it to the shop b/c i'm in school in MD, and i have to get back to NY to get it taken care of
as for the shifter, it's got the black ball in it...
as for not driving the car, i have to put at least 300miles before putting it to the shop b/c i'm in school in MD, and i have to get back to NY to get it taken care of
05-04-2006, 07:44 PM
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I appreciate everyone helping me out again... I just checked to see the shifter and it seems like that's not the problem... it's been so long that i remember that i thought it was the black cup on the ball of the shifter, but it seems that i actually have the kevlar cup... ****!
so, since we know the problems-- do you guys think it's any of these:
1. Transmission bearing
2. Linkage problem... w/ the detents
3. Shifter itself--something bent below the pivot or w/ the internal pivot itself...
4. broken clutch disk spring
5. loose pressure plate bolts
6. bent shifting fork
7. mainshaft retention ring is broken...therefore, the mainshaft is not engaging
We do know that the shiterball cup did not slip up on the retaining clip -- therefore causing trouble engaging the interlock (correct)?
Please help... i have to drive 250miles approximately to go home next week -- do you think that'll be ok? **** **** ****!!! sorry for the profanity.
so, since we know the problems-- do you guys think it's any of these:
1. Transmission bearing
2. Linkage problem... w/ the detents
3. Shifter itself--something bent below the pivot or w/ the internal pivot itself...
4. broken clutch disk spring
5. loose pressure plate bolts
6. bent shifting fork
7. mainshaft retention ring is broken...therefore, the mainshaft is not engaging
We do know that the shiterball cup did not slip up on the retaining clip -- therefore causing trouble engaging the interlock (correct)?
Please help... i have to drive 250miles approximately to go home next week -- do you think that'll be ok? **** **** ****!!! sorry for the profanity.