|
200 Series General Forum for the Volvo 240 and 260 cars |
Information |
|
Low-Pitched Whine At Slow SpeedsViews : 3671 Replies : 35Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Feb 27th, 2023, 14:55 | #11 | |
Premier Member
Last Online: Yesterday 22:15
Join Date: Jan 2020
Location: Corby del Sol
|
Quote:
__________________
... another lovely day in paradise. |
|
The Following User Says Thank You to Othen For This Useful Post: |
Feb 27th, 2023, 15:19 | #12 |
Junior Member
Last Online: Yesterday 02:00
Join Date: Jun 2022
Location: Ardleigh, Colchester
|
I thought as much 😂 if it wasn't my only transport, it'd be a different matter perhaps. Ah well, thanks all for the help nonetheless, I'll keep this space posted on any outcomes.
__________________
1990 Volvo 240 GL Auto "Catalyser" (oOOoh, fancy). B200F, about as original as they come, and all in BLOO. ~140k
My electronics website/blog thing: https://unintegratedcircuit.wixsite....egratedcircuit |
The Following User Says Thank You to TheHungriestBadger For This Useful Post: |
Feb 28th, 2023, 19:29 | #13 |
Junior Member
Last Online: Yesterday 02:00
Join Date: Jun 2022
Location: Ardleigh, Colchester
|
Can I just ask, what kind of damage can occur if one does jack up the transmission too much, apart from the (seemingly) obvious of cracking the ATF cooler lines and dipstick tube, which I've already convinced myself I haven't managed.
__________________
1990 Volvo 240 GL Auto "Catalyser" (oOOoh, fancy). B200F, about as original as they come, and all in BLOO. ~140k
My electronics website/blog thing: https://unintegratedcircuit.wixsite....egratedcircuit |
Feb 28th, 2023, 19:43 | #14 | |
Premier Member
Last Online: Yesterday 22:15
Join Date: Jan 2020
Location: Corby del Sol
|
Quote:
__________________
... another lovely day in paradise. |
|
Feb 28th, 2023, 19:51 | #15 |
Junior Member
Last Online: Yesterday 02:00
Join Date: Jun 2022
Location: Ardleigh, Colchester
|
No, the motor mounts are still in one piece so far as I can tell - certainly, the car still drives as smoothly as it did (which was fairly smooth, except for a rumble on deceleration which I lived with since no extra noises over 6k miles).
My only suspicion that I may have done, is that I needed to jack it up quite far (i.e. more than just 1", but probably not more than 3") to force the cross-member back. It seems pretty obvious that something shifted more towards the rear of the car in the process, otherwise it would've all just lined back up again pretty nicely. My curiosity comes from seeing lots of people say "don't do it or else big damage" but don't state along what kind of lines that big damage is. 'tis all
__________________
1990 Volvo 240 GL Auto "Catalyser" (oOOoh, fancy). B200F, about as original as they come, and all in BLOO. ~140k
My electronics website/blog thing: https://unintegratedcircuit.wixsite....egratedcircuit |
Feb 28th, 2023, 21:36 | #16 |
Master Member
|
I had the exact same issue, I tried to replace the GB mount, not realising the engine mounts had gone. I struggled to get it back together until I replaced all the engine mounts.
The sheer weight of the engine may have shifted when the gearbox mount was released. Even if the mounts were good.
__________________
Cowboy used to be a trade , now it means lack of one. |
Feb 28th, 2023, 21:44 | #17 |
Master Member
|
Other thing, was the driveline assembled when the gearbox was raised.
Could the drive plate/flange(from gearbox), joining to the propshaft have kinked/bent? (probably not, as it would vibrate like a spin cycle on a full load) Or damaged a bearing by putting a stress against it's axis? I know I'm giving more questions than answers, but it's a process of elimination.
__________________
Cowboy used to be a trade , now it means lack of one. |
Feb 28th, 2023, 22:01 | #18 |
Junior Member
Last Online: Yesterday 02:00
Join Date: Jun 2022
Location: Ardleigh, Colchester
|
The engine mount under the oil filter looked somewhat swollen, and the one on the opposite side looked like it was starting to crack/perish on the outer surface (similar condition to the trans mount I took off), so presumably the weight has indeed scooted everything out of alignment to the point of something new being unhappy. By the time it gets to the garage, car will have done about 3 miles total, so fingers crossed that a new set of engine mounts (and the correct trans mount) solve all. I'm guessing if they don't then it's either carrier bearing, or something more sinister with the diff (input bearing or pinion/backlash thereof?) or transmission (tailshaft bushing I guess?).
No vibrations, certainly not new ones - being in North Wales at the moment, descending some of the steeper hills has resulted in some fancy massaging seats 😉 but that's about it, braking on the flat or uphill, cruising, or accelerating (aka 99% of the time), the ride is smooth as can be, except at idle where it's a tad shaky - likely just in need of an ignition tune-up. Again, the only new thing is the whining/whirring noise which is brand new, and was instantly present from the second I drove away after doing the trans mount. I'll try get an audio recording of it on my way to the garage, although hopefully, it'll be no longer by the time I get the car back. Define "driveline assembled"? Was the cross-member bolted back up tight with the trans still jacked up? Yes, because otherwise the cross-member couldn't be pushed vertically up far enough to thread the bolt through it and into the chassis.
__________________
1990 Volvo 240 GL Auto "Catalyser" (oOOoh, fancy). B200F, about as original as they come, and all in BLOO. ~140k
My electronics website/blog thing: https://unintegratedcircuit.wixsite....egratedcircuit |
Feb 28th, 2023, 23:12 | #19 |
Master Member
|
Driveline assembled , the gearbox output connected to the propshaft and all the way to the differential .
So basically 1 piece from engine to diff.
__________________
Cowboy used to be a trade , now it means lack of one. |
Feb 28th, 2023, 23:19 | #20 |
Master Member
|
I cut about 10mm of each end of the studs on the gearbox mount, to ease fitment. Space is restricted. Also there was way too much thread on the crossmember side to get a socket on when removing it and I didn't want to go through that on refitting.
I have a different gearbox, but the principles would be quite similar. Even with the gearbox side stud cut, the was barely room to get a ring spanner through the gap.
__________________
Cowboy used to be a trade , now it means lack of one. Last edited by Bob 1967; Feb 28th, 2023 at 23:23. |
Tags |
low pitch, noise, transmission mount, volvo 240, whine |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|