Driveline Vibration

[dvsboy]

jus wondering if any of you guys have had this problem. I`m getting a minor vibration in the driveline somewhere, when I accelerate and decelerate but it seems to be worse when decelerating... The vibration goes away when I disengage the clutch or put it in neuteral. The problem arose when I replaced the pasenger side rear CV. I have sent the car to a diff specialist and had the cradle removed, the diff dissasembled and totally overhauled, replaced all bearings and reassembled. I`ve also changed the centre bearing and had an on car tailsaft balance done at ford. . . even they sent me home scratching their heads. ANY ADVICE WOULD BE APPRECIATED.

the car is a BA with a T56 and option 2 clutch

Edited 10/11/10 10:58 AM by dvsboy

[neil101]

Factory CV shaft or after market?

Neil

[dvsboy]

I put an aftermarket one in first, then swaped it with a second hand factory one that I borrowed for a little while, and I found the vibration didn`t differ. I`m starting to lean towards a clutch bearing now, I`ve gone through absolutley everthing from the gearbox back. . .

[Guest EGOXRT]

Something to do with rpm not roadspeed.

Edited 19/11/10 05:41 AM by EGOXRT

[XR64LT]

im having few vibrating dramas with mine at the moment, has my mechanic stumped but he rang around and he seems to think that its the tailshaft. apprantly theres another tube inside the tailshaft that from factory it seems to want to float around causing vibrations throughout the whole car. just another option for you to look at investigating I guess.

Leo

[dvsboy]

Thanks for the comments. Gonna rip the box out next weekend and give everything another look over, maybe change the thrust bearing again. . .

"USE FAST REPLY. NO NEED TO QUOTE ABOVE POST" RHR

[spoolxr6]

was the thrust bearing new? the thrust bearing usually makes more noise than vibration when worn.

[neil101]

check all your engine mounts and gearboxs mounts if thier is any browm staining on the crossmember under the engine mount (specially the d/s one under the turbo) they need replacing go genunine I know there expensive but trust me so much better quaility than aftermarket.

Cheers Neil

[dvsboy]

Yeah thrust bearing was new. . . But after speaking to mal wood he seems to think that I might of damaged the pressure plate on the clutch seeing that I did give it a very hard time.

[Bullet]

My steering wheel vibrated a lot at around 80km/h. I had the wheels balanced, wheel alignment done, put the stock 17's back on and nothing altered it.

I had replaced a drive shaft previously (and swapped to a 4.1 diff) and in desperation rotated the tailshaft one bolt hole on the diff flange...Presto vibration gone.

It's not hard to do and only takes 10 mins one the car's jacked up.