Unique problems on E39

[Kennieboy]

Hi all,

My ride is experiencing 2 problems;

1. 'Thud' noise (intermittent interval) prior to my ride coming to a complete stop.

2. After reversing, 'Big Jerk' felt after shifting the gear from 'R' to 'D'.

Highlighted these problems when my ride underwent 50k km servicing recently but PML reported - No Fault Found. Wondering if anyone experienced such similiar problems. Please advise. Thank you.

 

[piggyboyz]

I would reckon that it's the propellor shaft bushing that is the culprit.

Try to get someone to check on the central bushing for the propellor shaft, both the sound u mentioned seems to come from the same cause...

U might have to remove the exhaust to check the bushing though...

 

[anson7835]

I used to have a slight jerk during the downshift of gears, especially when coming to a stop. Wonder if you are having the same problem.

My problem was solved as I ask PML to upgrade the software. Afterwhich, no problem at all. Man and machine live happyily thereafter.

 

[Kennieboy]

Thanks for replying. With regards to the propeller shaft, it was replaced when my car was only a week old . About the gearbox software upgrade, its was done during my last servicing . Seems like a recurring problem again. Looks like i gotta 'visit' PML again...

 

[Kennieboy]

Jus wondering, the 'thud' sound - it is related to the transmission or gearbox??

 

[Racebred]

it's the downshift to 2nd gear as you're coming to a stop.

 

[russo]

The thud that you mentioned normally occurs to E46s only not E39. Programming the ECU or DME might/might not work for E39. If all fails, check for freeplay/backlash in prop shaft. If its ok then live with it. :|