Hi all, having probs working this one out Sl280 Import on a 1999 plate but with a Straight 6 not v6. My father brought the car from a merc dealership back in 2004 and the gearbox use to clonk dont know which gears think it was from first to second? So because of warranty they kept the car for 2 weeks and said they replaced the trany???? got a reciept for £7000 thou of a new trani. Now I have got my hands on the car yippie:bannana: as my dad didnt drive it much the car is in good condition but when i used kick down all i would hear is pop pop pop then a clonk then a gear change? I have changed the oil 2day it changes gear better but still the poppin. sometimes it will pop in first to second gear changes? when the trani was changed the car had 36Ks on it, now its only 50K any help?
grober
MB Master
First you need to establish which gearbox you have. If you key your VIN (Chassis no) into the box on this site it should give you all the build details of your car. http://old.mbclub.ru/mb/vin/view.html?lng=eng If its one of the old 4 speed boxes it may just need the pressure control cable adjusting or perhaps the vacuum side checked OR---- the problem may be more serious. Come back with the gearbox number first and you may get more feedback?
grober
MB Master
Sounds like you have the electronic 5 speed box. You should be able to get the fault codes read to see what's going on. http://www1.snapon.com/display/DocMgmtDisplayFile.aspx?fileid=4658
Sp!ke
Administrator
I'm thinking driveshaft or diff noise and not gearbox at all.
Sp!ke
Administrator
I'm still not convinced. Kickdown between first and second will be more severe than any other gear and in a little 280 it may well only make the noise in lower gears if the changes are particularly harsh.
My manual W124 has a clonking noise, mostly between 1st and 2nd. Its been there for years and I can assure you that it is coming from the diff on my car and not the gearbox. Its quite common on manual MB's apparently as the diff was designed with smooth changing auto's in mind.
All I am saying is that I wouldn't rule it out. Its a simple task to get under the car and turn the driveshaft while in neutral to see how much play there is in your diff.
My manual W124 has a clonking noise, mostly between 1st and 2nd. Its been there for years and I can assure you that it is coming from the diff on my car and not the gearbox. Its quite common on manual MB's apparently as the diff was designed with smooth changing auto's in mind.
All I am saying is that I wouldn't rule it out. Its a simple task to get under the car and turn the driveshaft while in neutral to see how much play there is in your diff.
Last edited:
Thanks Will check when i next get the car in the air but seem to be finding more and more probs with the car! when changing the plugs 1 and 2 were covered in oil plus theres oil leaking out of camshaft sensor at the front! how fun!
