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sport135 08-13-2007 02:54 PM

Ticking at back of E36 318ti....

My first post on bimmerfest - looks like a great site!

I'm hoping somebody here can help me out - I've got a weird ticking noise coming from the back of my E36 318ti - it gets worse at speed (~70mph ish), but stops when I lift off the accelerator.... Possibly bearing, propshaft or exhaust issue maybe?

Any thoughts greatly appreciated, as are any recommendations for any good BMW specialists in SW London!


Pirate_copy 08-13-2007 02:58 PM

Hey buddy, welcome to the fest :thumbup:

When you say ticking, is it like a loud metal on metal ticking or more of a thump?

sport135 08-13-2007 03:00 PM

Hi mate,

More of a rattly ticking sound I suppose - not a thumping sound. Seems weird that it stops when I lift off - suggests transmission problem to me....?

Pirate_copy 08-13-2007 03:20 PM

Is it when you lift off or when you dip the clutch?

Is odd if it is when you lift off as the drivetrain is still be driven :dunno:

SewerSideUp 08-13-2007 05:34 PM

True Pete, it still being driven but the force is reversed. It's almost like the diff. is trying to push the tranny. Could probably be a bad bearing or maby diff. internals. Just my opinion.
Wehn power is applied, something might be lifting out of place inside the diff. and (maby a gear is loosing its position ? very slightly though.) And when power is taken off, it goes back into place. I know I have the weirdest comments ! Don't even ask me why !

elfhearse 08-13-2007 05:44 PM

weird...seems like it would have to be driveshaft or rear differential/half shafts.
Flex disc..., Rear diff mount ear bushing....something that is effected by the torque while accelerating.

96 models had a TSB for rattling catalytic converter, but that is under the passenger side seat area.

E36 Phantom 08-13-2007 07:48 PM

I'm with Sewer on the fact that it has to be some sort of joint or gear that is twisted and stressed by the engine if it only happens when the accelerator is pushed. As to what specifically, though, I really don't know here.

sport135 08-13-2007 11:36 PM

Thanks for all your comments - seems like we're all thinking roughly along the same lines...! Looks like a trip to my local specialist might be in order.... !


Pirate_copy 08-14-2007 01:24 AM

Check your Universal Joint buddy

Flex disk is also a good call but i think you would get slightly different symptoms

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