Annoying Vibration and Rumble

Pete_89T2 · 02-16-2011, 03:12 PM

The OEM stock driveshaft will probably cost you a lot more than $270, I'd go with the AL one TTT mentioned.

***TitaniumTT*** · 02-16-2011, 04:09 PM

word yo.... MT TII - $421, MT aftermkt - $267, MT AL - $382.5

Or you can prob find a used shaft for $50....

Is this an auto/5spd? n/a TII? I've got a few n/a S4 shafts in the basement...

tweiss3 · 02-16-2011, 04:19 PM

NA S5 non lsd 5-speed manual

It seems in looking for used parts, I have the hardest driveshaft to find.

***TitaniumTT*** · 02-16-2011, 05:52 PM

Are the yokes between S4/5 the same?

tweiss3 · 02-16-2011, 10:40 PM

They are listed completely different parts.

Now, on my way home, i discovered something. While the car has even the slightest part throttle through WOT the vibration is there, also in neutral its there, and when the car is moving but motor is shut off, however, under engine braking/deceleration the vibrations and rumble disappear. Now i am quite confused.

***TitaniumTT*** · 02-16-2011, 10:52 PM

Pull the d/s off and take it to a d/s shop and have them spin it up looking for vibrations, they'll check ujoints too. If the d/s comes back clean, it's the diff. you telling me that there's no vibe on decel tells me possibly diff.

tweiss3 · 02-16-2011, 10:59 PM

Thanks, now to locate one that will not rip me off, and hold out till I get my dad's truck fixed. His hand surgery will turn that job in to a me work and him supervise job.

Max777 · 02-17-2011, 09:00 PM

Well guys, Max chiming in on my own problem:

I had the car up on the lift at work (Volvo Dealer) and the little stub shafts that come out of the diff had a lot of play in them. At first I thought it was the axles, but now I'm questioning that it's the diff?

One REALLY strange thing is: as I accel to 4th gear on the highway, I get NO vibration in 4th... Then I up-shift into 5th and bam, brrrrrrrrrrrrrrrr, there it is.

Does anyone have a clue as to why the vibration would disappear in 4th at 65mph?

tweiss3 · 02-17-2011, 10:59 PM

Well, saturday morning i may try to drain the diff and see what comes out, but I have to replace the fluids immediately, since its my dd. I have 3 quarts of GL5 75W90. Is this the proper fluid? All the FSM states is API Service SAE90.

Could my diff issues be related to driving it hard when it was -10*F here? and not using the SAE80W diff fluid?

***TitaniumTT*** · 02-18-2011, 12:32 AM

Quote:

Originally Posted by Max777

Well guys, Max chiming in on my own problem:

I had the car up on the lift at work (Volvo Dealer) and the little stub shafts that come out of the diff had a lot of play in them. At first I thought it was the axles, but now I'm questioning that it's the diff?

One REALLY strange thing is: as I accel to 4th gear on the highway, I get NO vibration in 4th... Then I up-shift into 5th and bam, brrrrrrrrrrrrrrrr, there it is.

Does anyone have a clue as to why the vibration would disappear in 4th at 65mph?

So at 65 in forth there's no vibs, but at 65 in 5th there is vibes? Could be harmonics, could be tranny

***TitaniumTT*** · 02-18-2011, 12:34 AM

Quote:

Originally Posted by tweiss3

Well, saturday morning i may try to drain the diff and see what comes out, but I have to replace the fluids immediately, since its my dd. I have 3 quarts of GL5 75W90. Is this the proper fluid? All the FSM states is API Service SAE90.

Yup, proper fluid for an n/a S4 diff. No additives needed.

Quote:

Originally Posted by tweiss3

Could my diff issues be related to driving it hard when it was -10*F here? and not using the SAE80W diff fluid?

Was it warmed up? If so than nope.

tweiss3 · 03-18-2011, 08:31 AM

Is it possible my problem is more related to completely shot trans and motor mounts causing improper tail shaft angle?

Pete_89T2 · 03-18-2011, 10:06 AM

Quote:

Originally Posted by TitaniumTT

So at 65 in forth there's no vibs, but at 65 in 5th there is vibes? Could be harmonics, could be tranny

Noise & vibes in every gear except 4th sounds like shot tranny bearings to me. When the trans in my '85 GSL-SE was on its way out, that's basically what it was doing. Fix was a tranny rebuild. 4th is a 1-to-1 ratio, which explains why the noise/vibes change dramatically. In my FB, it sounded like marbles rattling around in a coffee can in all gears except 4th, with a noticable change in driveline vibration that you could feel if you pay attention to it. Symptom was more noise than vibration though, however the FB didn't have an independent rear suspension like the FC does, so the noise/vibe characteristics would likely be different.

Max777 · 03-22-2011, 05:09 PM

Well, I'm about to pick up a spare diff and a spare transmission. I'll let you know which one fixes it.

I'm gonna try the differential first because it's easier to do, if not, then the transmission is next in line.

After all that nonsense is fixed, I'm finally gonna be able to tune my damn car at a dyno, hell yes!

***TitaniumTT*** · 03-22-2011, 07:35 PM

Tranny is WAY easier than a diff.

And for the tranny bearings to cause that much slop, well, those bearings are destined for my wall of shame, hall of failures, I dun blowed it up shelf

02-16-2011, 04:09 PM	#17
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	word yo.... MT TII - $421, MT aftermkt - $267, MT AL - $382.5 Or you can prob find a used shaft for $50.... Is this an auto/5spd? n/a TII? I've got a few n/a S4 shafts in the basement... __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

02-16-2011, 04:19 PM	#18
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	NA S5 non lsd 5-speed manual It seems in looking for used parts, I have the hardest driveshaft to find. __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

02-16-2011, 05:52 PM	#19
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	Are the yokes between S4/5 the same? __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

02-16-2011, 10:40 PM	#20
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	They are listed completely different parts. Now, on my way home, i discovered something. While the car has even the slightest part throttle through WOT the vibration is there, also in neutral its there, and when the car is moving but motor is shut off, however, under engine braking/deceleration the vibrations and rumble disappear. Now i am quite confused. __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

02-16-2011, 10:52 PM	#21
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	Pull the d/s off and take it to a d/s shop and have them spin it up looking for vibrations, they'll check ujoints too. If the d/s comes back clean, it's the diff. you telling me that there's no vibe on decel tells me possibly diff. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

02-16-2011, 03:12 PM	#16
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD iTrader: (1) Posts: 874 Rep Power: 15	The OEM stock driveshaft will probably cost you a lot more than $270, I'd go with the AL one TTT mentioned.

02-16-2011, 10:59 PM	#22
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	Thanks, now to locate one that will not rip me off, and hold out till I get my dad's truck fixed. His hand surgery will turn that job in to a me work and him supervise job. __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

02-17-2011, 09:00 PM	#23
Max777 Pirate Join Date: Mar 2008 Location: Central IL iTrader: (5) Posts: 1,323 Rep Power: 18	Well guys, Max chiming in on my own problem: I had the car up on the lift at work (Volvo Dealer) and the little stub shafts that come out of the diff had a lot of play in them. At first I thought it was the axles, but now I'm questioning that it's the diff? One REALLY strange thing is: as I accel to 4th gear on the highway, I get NO vibration in 4th... Then I up-shift into 5th and bam, brrrrrrrrrrrrrrrr, there it is. Does anyone have a clue as to why the vibration would disappear in 4th at 65mph? __________________ Rotaries:They are NOT that complicated!

02-17-2011, 10:59 PM	#24
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	Well, saturday morning i may try to drain the diff and see what comes out, but I have to replace the fluids immediately, since its my dd. I have 3 quarts of GL5 75W90. Is this the proper fluid? All the FSM states is API Service SAE90. Could my diff issues be related to driving it hard when it was -10*F here? and not using the SAE80W diff fluid? __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

03-18-2011, 08:31 AM	#27
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio iTrader: (0) Posts: 319 Rep Power: 15	Is it possible my problem is more related to completely shot trans and motor mounts causing improper tail shaft angle? __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

03-22-2011, 05:09 PM	#29
Max777 Pirate Join Date: Mar 2008 Location: Central IL iTrader: (5) Posts: 1,323 Rep Power: 18	Well, I'm about to pick up a spare diff and a spare transmission. I'll let you know which one fixes it. I'm gonna try the differential first because it's easier to do, if not, then the transmission is next in line. After all that nonsense is fixed, I'm finally gonna be able to tune my damn car at a dyno, hell yes! __________________ Rotaries:They are NOT that complicated!

03-22-2011, 07:35 PM	#30
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	Tranny is WAY easier than a diff. And for the tranny bearings to cause that much slop, well, those bearings are destined for my wall of shame, hall of failures, I dun blowed it up shelf __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**