thump thump thump

[ekalmus]

I have a beautiful 318is 1993. It is very reliable and I have not had anything go wrong in the year I have owned it. There is however one problem I have not even been able to locate. When accelerating in 2nd gear, sometimes 1st if I push it, or sometimes third I get a banging noise directly under the emergency brake. I assumed it was a pipe hitting the underside of the body. I have had the heat sheilds welded... put muffler hangers on the pipes and still no luck. I would rather not spend the money to have the shop test, and test, and test it until they locate the problem, so please help if you have any idea what could be making the noise.

Thank you for any help you might give,

Eric

[Furious]

this is what you would call the Guibo disk or flex disk. it needs to be replaced (it connects your tranny to the driveshaft) look at it closely there should be no freying or breaks at all

if its not that then check your tranny mounts for excessive wear

[EXtech]

right on Furious... I would also add to check both the trans mounts and the engine mounts. Each can be a contributing factor to the other.

[RallyE36]

You may want to check the center driveshaft coupling.
Some models come with a hard rubber coupling mounted between the driveshaft and the transmission flange.
This may have deteriorated with time and cracked. With the engine torque there may be movement of the shaft and the flange bolts may be hitting an exhaust shield or other component.

Good luck

[ekalmus]

Thanks for your help - looks like it is the drive shaft support - a $40 part.

[EuphoriaII]

Originally posted by ekalmus@Feb 23 2004, 05:18 PM
Thanks for your help - looks like it is the drive shaft support - a $40 part.

I had that happen once.