Think the reliable BMW is broke... lol transmission -Help?
06-09-2007, 08:38 AM
#1
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Think the reliable BMW is broke... lol transmission -Help?
ok, its going in to be looked at tomorrow, but i'd still like to get some idea off people.
A few months back after a trip to the garage to get some engine bits done, when i drove it home i felt like i had a slight rumblng/vibration when turning left. I didn't really think much of it and thought i was imagining it.
over time it seemed to get worse, and something was definately up, so i popped it into the garage to get looked at. Occasionally i could feel a grumble or something when driving along normally. figured it was just getting worse. I was thinking maybe a wheel bearing or something. Anyway, the found both the gearbox mounts/bushes (they look like bushes to me) were donald ducked and split. so, 2 new ones of them and about 10quid later and off i went.
anyway, still had a problem on hard left corners, so obviously there was something more serious.
ANyway, like a sensible chap who looks after his cars well, i decided to go to the southend meet lastnight....
50 miles later, and the dodgy grumbling noise is ever present, bend or no bend, something sounds unhealthy. and the noise dissapears when i dip the clutch. (i havent tried clutch up, car in neutral). with the clutch in the noise dissapears in all situations, normal driving and left hand corners.
so, any thoughts on what i might be facing? could it be as simple as a thrust bearing? could i be looking at a new gearbox? could the clutch (which has only done about 2k) be totalled? can it be something other than the gearbox? prop etc.? or is that impossible?
A few months back after a trip to the garage to get some engine bits done, when i drove it home i felt like i had a slight rumblng/vibration when turning left. I didn't really think much of it and thought i was imagining it.
over time it seemed to get worse, and something was definately up, so i popped it into the garage to get looked at. Occasionally i could feel a grumble or something when driving along normally. figured it was just getting worse. I was thinking maybe a wheel bearing or something. Anyway, the found both the gearbox mounts/bushes (they look like bushes to me) were donald ducked and split. so, 2 new ones of them and about 10quid later and off i went.
anyway, still had a problem on hard left corners, so obviously there was something more serious.
ANyway, like a sensible chap who looks after his cars well, i decided to go to the southend meet lastnight....
50 miles later, and the dodgy grumbling noise is ever present, bend or no bend, something sounds unhealthy. and the noise dissapears when i dip the clutch. (i havent tried clutch up, car in neutral). with the clutch in the noise dissapears in all situations, normal driving and left hand corners.
so, any thoughts on what i might be facing? could it be as simple as a thrust bearing? could i be looking at a new gearbox? could the clutch (which has only done about 2k) be totalled? can it be something other than the gearbox? prop etc.? or is that impossible?
06-09-2007, 08:45 AM
#5
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i did see ya drive past on the 127 at about 150mph on the way home Jim!! I was doing about 30, one of my brake caliper / carrier bolts had snapped and the caliper was swinging on the other on!
Have you spoken to PMW about it?
I was doing about 30, one of my brake caliper / carrier bolts had snapped and the caliper was swinging on the other on! Have you spoken to PMW about it?
06-09-2007, 09:07 AM
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cfoster, it's booked into PMW on wednesday for something else (showing MAF error even tho they fitted a new MAF)
i don't want to drive it all the way to chelmsford sounding like this tho!!!!
with the diff, is it possible for it to only do it with the clutch in? surely the diff's always spinning nomatter what. it doesnt just do it under load.
i don't want to drive it all the way to chelmsford sounding like this tho!!!!
with the diff, is it possible for it to only do it with the clutch in? surely the diff's always spinning nomatter what. it doesnt just do it under load.
06-09-2007, 09:16 AM
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A diff will be indeed be noisy all of the time as it is constantly rotatating.
If the noise disappears once the clutch is depressed then reappears when it is released it sounds as if the main input bearing is goosed. Diriving with one gone will only make the problem worse and could screw the whole box up.
Worrying how it started on left hand bends only though????
If the noise disappears once the clutch is depressed then reappears when it is released it sounds as if the main input bearing is goosed. Diriving with one gone will only make the problem worse and could screw the whole box up.
Worrying how it started on left hand bends only though????
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06-09-2007, 09:19 AM
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could be 2 seperate problems, and a co-incidence?
i was thinking perhaps exhaust touching something. that makes a HORRID noise and sounds like the chasis's about to fall off
i was thinking perhaps exhaust touching something. that makes a HORRID noise and sounds like the chasis's about to fall off
06-09-2007, 09:51 AM
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Two things come to my mind, Jim
Firstly, if I recall there is a rubber coupling on the drive shaft. Check to see if that is worn. To be honest, I dont think the diff would be doing it - they are pretty strong in those cars, and why would it get quiet when you dip the clutch? The diff would still be turnign I guess!
The other thing is that I believe that the E36 M3s have a dual mass flywheel (I could be wrong on this!). They tend to brake when the clutch wears out. It is possible (IF it has a dual mass flywheel) that the previuos owner didnt replace it when a clutch was done?
Above is as always pure guesswork. Check the rubber coupling on the shaft as a first port of call in my opinioon.
JJ
Firstly, if I recall there is a rubber coupling on the drive shaft. Check to see if that is worn. To be honest, I dont think the diff would be doing it - they are pretty strong in those cars, and why would it get quiet when you dip the clutch? The diff would still be turnign I guess!
The other thing is that I believe that the E36 M3s have a dual mass flywheel (I could be wrong on this!). They tend to brake when the clutch wears out. It is possible (IF it has a dual mass flywheel) that the previuos owner didnt replace it when a clutch was done?
Above is as always pure guesswork. Check the rubber coupling on the shaft as a first port of call in my opinioon.
JJ
06-09-2007, 11:12 AM
#11
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yes it has a dual mass flywheel
when my clutch was replaced (about 2k miles i guess) the flywheel was on the tollerance limit for what is acceptable, and it was re-used.
(whatever the tollerance is, mine was bang on the max... lol)
when my clutch was replaced (about 2k miles i guess) the flywheel was on the tollerance limit for what is acceptable, and it was re-used.
(whatever the tollerance is, mine was bang on the max... lol)
06-09-2007, 12:03 PM
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could be the rubber doughnut? or centre prop bearing? does it do it under hard acceleration? just my two pence worth 
i done a clutch on an m3 a little while ago and changed the dual mass flywheel, i cant see how someone can tell how much is left in the flywheel, because they have a certain amount of play in them from new?
i done a clutch on an m3 a little while ago and changed the dual mass flywheel, i cant see how someone can tell how much is left in the flywheel, because they have a certain amount of play in them from new?
06-09-2007, 12:55 PM
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I think the point you are all missing here is that the prop will still be turning even when the clutch is disengaged due to the road wheels driving it. If if was the prop then it would be constant if the car was moving and not stop with the clutch disengaged.
My money is still on either the gearbox or the flywheel.
Jeff
My money is still on either the gearbox or the flywheel.
Jeff
06-09-2007, 12:59 PM
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Originally Posted by bookwyse
I think the point you are all missing here is that the prop will still be turning even when the clutch is disengaged due to the road wheels driving it. If if was the prop then it would be constant if the car was moving and not stop with the clutch disengaged.
My money is still on either the gearbox or the flywheel.
Jeff
My money is still on either the gearbox or the flywheel.
Jeff
06-09-2007, 02:07 PM
#21
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does it under acceleration (hard to tell under HARD acceleration, exhaust is LOUD ) and deceleration
easier to spot under deceleration, as the exhaust shuts up
i had a new prop donut on since i've owned the car, so about 5k miles ago?
) and decelerationeasier to spot under deceleration, as the exhaust shuts up
i had a new prop donut on since i've owned the car, so about 5k miles ago?
06-09-2007, 02:16 PM
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could be the centre bearing, i replacer one a little while ago on one, but hopefully the garage should be able to tell when they get it up on the ramp? im only in south woodford if you ever needed anyone to have a look? only 10 minutes away from the blackwall tunnel
06-09-2007, 03:40 PM
#27
one of our vito's had the dual flywheel go and it took out the bellhousing too
not cheap
apparently you have to change the flywheel when you change the clutch or otherwise the new clutch fucks the flywheel
but that's what i've been otld only for the vito's so perhaps you'll be lucky and it'll be a seal gone in the slave cylinder
not cheap
apparently you have to change the flywheel when you change the clutch or otherwise the new clutch fucks the flywheel
but that's what i've been otld only for the vito's so perhaps you'll be lucky and it'll be a seal gone in the slave cylinder
06-09-2007, 04:10 PM
#30
with the dual mass, as far as i could see form looking at our broken one, i would assume that when the clutch was pressed it would clamp up the centre portion of the flywheel
it had an outer and an inner, all on rubber bungs from the looks of it, and they had sheared off so that the centre bit that was supposed to be sprung wasn't and there was no drive being transmitted and it basicly chewed the clutch up and when it came loose form the main body of the flywheel it bounced baout inside the bellhousing kiling that too
it had an outer and an inner, all on rubber bungs from the looks of it, and they had sheared off so that the centre bit that was supposed to be sprung wasn't and there was no drive being transmitted and it basicly chewed the clutch up and when it came loose form the main body of the flywheel it bounced baout inside the bellhousing kiling that too
06-09-2007, 05:47 PM
#31
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ok, when clutch is UP and car is in neutral, no noise
so it's not the clutch being engaged as such, it's the fact that there's no drive which makes the noise dissapear
so it's not the clutch being engaged as such, it's the fact that there's no drive which makes the noise dissapear
07-09-2007, 06:14 PM
#34
just finding my feet
jim there is a flywheel problem with the car from the ring as its not allowing the relesing the clutch fully causing it to overheat
diff bushes and centre prob BEARING maybe the cornering issue
the spigot bearing or flywheel maybe a issue for the noise i would guess
best get it to a gearbox place,,, if your still near dartford/gravesend area i can have a word with the gaffer of one place who maybe able to have a look at the car for ya whos one of my customers if you like
of not what about BAR, he seems ok but i dont deal with him alot at work
if you cant find a place ill put the word about and see who i may beable to find if you like
diff bushes and centre prob BEARING maybe the cornering issue
the spigot bearing or flywheel maybe a issue for the noise i would guess
best get it to a gearbox place,,, if your still near dartford/gravesend area i can have a word with the gaffer of one place who maybe able to have a look at the car for ya whos one of my customers if you like
of not what about BAR, he seems ok but i dont deal with him alot at work
if you cant find a place ill put the word about and see who i may beable to find if you like
07-09-2007, 06:46 PM
#36
just finding my feet
not really as i was telling him it was fucked at the ring 
be it turns out to be the relese bearing and rear top mount or something stupid and JIM yet again gets to look smug
be it turns out to be the relese bearing and rear top mount or something stupid and JIM yet again gets to look smug
07-09-2007, 08:28 PM
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Originally Posted by Ginge !
not really as i was telling him it was fucked at the ring
be it turns out to be the relese bearing and rear top mount or something stupid and JIM yet again gets to look smug
be it turns out to be the relese bearing and rear top mount or something stupid and JIM yet again gets to look smug
JJ
08-09-2007, 01:29 PM
#38
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ok ginge, just to reiterate this point for about the 20th time...
the reason the clutch went was simple... the hydraulic fluid overheatedthis is quite easy to do since it's shared with the brake fluid
this meant that whilst you were sitting there in traffic with the car in gear/clutch dipped for 30 minutes the clutch was being slipped. this overheats the clutch. The reason the problem never occured whilst i was driving is because i don't sit there slipping the clutch
anyway, had a voicemail form them lastnight, it's the diff
the reason the clutch went was simple... the hydraulic fluid overheatedthis is quite easy to do since it's shared with the brake fluid
this meant that whilst you were sitting there in traffic with the car in gear/clutch dipped for 30 minutes the clutch was being slipped. this overheats the clutch. The reason the problem never occured whilst i was driving is because i don't sit there slipping the clutch
anyway, had a voicemail form them lastnight, it's the diff
