I have a 75 280c, and probably this is going to be a dumb question, but, How many speeds is this car supposed to have?

Thx
109k miles

It has a 4spd transmission although it probably starts off in 2nd gear.



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Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician

Thx for the info Steve, the problem that I have is that when i reach 75 m/hrs the car starts to vibrate and it feels like the engine is not switching to the next speed/gear, from 0-75m/hr I can clearly feel only 2 changes,which means that the last speed should be the 3rd. I just got 4 new tires on it, balanced them twice cause I thought that balance was the problem.
WHAT CAN I DO?

What does your tachometer read at 75 per? You should only feel 2 changes if you are starting in 2nd. 2nd to 3rd (first change) and 3rd to 4th (second change).

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Jeff L
1987 300e
1989 300e
1987 BMW 325

Well, maybe there is something else, With 110k miles on this car, Do you think the catalityc converter maybe clogged? and causing the vibration?.....What else can it be??? HELP!!

Thanks you'all

Francisco

I would suspect a driveshaft vibration possibly made worse by a bad trans mount.

Check your flex discs for cracking/loose bolts. Check the center support to see that the flexible rubber mount is intact. Look at the u-joint for rust or looseness.

Also look at your drive axles for verticle play. This is a judgement call so your should see a professional probably.

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Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician