autobox woes
10-06-2006, 01:08 PM
#1
Newbie
Thread Starter
Join Date: Oct 2006
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
autobox woes
Hi All,
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
thanks in anticipation.
Keith
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
thanks in anticipation.
Keith
10-06-2006, 01:28 PM
#2
MBWorld Fanatic!
Join Date: Jul 2005
Location: Boston
Posts: 3,094
Likes: 0
Received 0 Likes
on
0 Posts
is a German Tank
Hi All,
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
thanks in anticipation.
Keith
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
thanks in anticipation.
Keith
Well the W124 autobox is not very troublesome until you reacha certain amount of miles, thats when the bugs start kicking in.
I would strongly advice you to have your autobox filter + Fluid replaced immediately.
My tranny has sort of similar symptoms but its not the tranny itself but rather the flex disks...
10-10-2006, 02:23 PM
#6
MBWorld Fanatic!
Join Date: Dec 2002
Location: Vancouver, BC
Posts: 3,491
Likes: 0
Received 2 Likes
on
2 Posts
Enzo, my Benzo
ummmmmm....let me just RE-POST his original post....
Hi All,
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
I have just bought my first Merc, a W124 300TD estate ( I beleive you call them wagons in the US ) The car is in good order and wears its 195000 miles well. I have done a few odd jobs around the car to bring it up to spec, it had been stood still for ten months. So I fixed the windows the heater the reverse lights and various other jobs some nice, sort the radio to play my ipod and some nasty, new brake pipes !
However I have a problem with the auto gearbox and I'm hoping you good folk out there on the www may be able to help. I have changed the fluid and filter in the gearbox. It changes smoothly from first to second and from third to fourth, the problem is the change from second to third, the only way I can describe it is like clutch slip, the engine speed rises by 1000rpm before dropping back down again as third gear engages. I can drive round this problem by backing off the throttle early at 2750rpm and provoking an early change. Dose this sound familiar to anyone? Have I bought a lemon? I am fairly adept technically but more towards motorcycles that don't generally have automatic gearboxes.
lolKeith, you may want to post this at mercedesshop.com....there are more qualified people on there that will be able to help you instead of just mock you.
10-10-2006, 02:53 PM
#7
MBWorld Fanatic!
Join Date: Jul 2005
Location: Boston
Posts: 3,094
Likes: 0
Received 0 Likes
on
0 Posts
is a German Tank
becuse of this.thats twice today
Trending Topics
10-10-2006, 03:44 PM
#8
Senior Member
Join Date: Aug 2004
Location: Richmond, Va.
Posts: 285
Likes: 0
Received 0 Likes
on
0 Posts
1991 300E
tranny
Laverda, I know what you are describing. All I can say is that a new tranny is probably in your future. My car would do what you are describing sometimes, mostly on down shifts, but not always, especially when trying to accelerate up a hill. It didn't really bother me and as long as I didn't floor the gas it wouldn't really happen that often. About nine months later my reverse quit working and I had to get a new transmission. When cold, these cars will always shift at a higher RPM than normal to help the engine warm up quicker. If you're only having this issue when the engine is cold, then you're probably o.k.
10-10-2006, 03:51 PM
#9
Member
I have the exact same problem, my buddy works as a MB tech at a dealership out here, he said it could be an issue with the Valve that determines shift quality, since it runs off of vacum, it may have a leak... there is a DIY on mercedes shop, let me find the link one sec
10-10-2006, 03:58 PM
#10
Member
Here is the article i was talking about. Hope that helps? http://www.mercedesshop.com/Wikka/TransVacTune
10-10-2006, 05:07 PM
#11
MBWorld Fanatic!
join the bad tranny club!
The mechanics I have spoken to say that these trannies typically go 200,000-220,000 miles before needing a replacement or rebuild. So you're right about in that range.
I wouldn't call your car a lemon at all. It's a man-made, mechanical device that eventually will wear and break down. I'd say 200k miles was a pretty good life span for your transmission.
The mechanics I have spoken to say that these trannies typically go 200,000-220,000 miles before needing a replacement or rebuild. So you're right about in that range.
I wouldn't call your car a lemon at all. It's a man-made, mechanical device that eventually will wear and break down. I'd say 200k miles was a pretty good life span for your transmission.
10-11-2006, 01:51 PM
#12
Almost a Member!
Join Date: Feb 2006
Location: Henderson TN
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
95 E320 Wagon
Your trans is due for a rebuild, a replacement is not necessary. The clutches are worn out from use. Mine were shot at 186,000 and this is also when my reverse quit working. Simple rebuild has it feeling like new.
10-11-2006, 02:22 PM
#13
Member
does anyone know of a place that I could have mine done here in canada (anyone from ontario?) I saw someone took theirs to an AAMCO, we have one in my city, is that a good place? Or do i have to have the tranny sent to the states somewhere.
10-12-2006, 09:22 AM
#14
Newbie
Thread Starter
Join Date: Oct 2006
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Big thankyou Mr Hound, this is the sort of positive info I was looking for. I will get stuck into the job over the next few days and let you know my progress.
fresh meat indeed.......sheesh.
Keith : )
fresh meat indeed.......sheesh.
Keith : )
10-12-2006, 01:56 PM
#15
Newbie
Join Date: Sep 2006
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Same problem
My 1990 300TE has the same problem with shifts from 2-3 and 3-4. ie. engine rpm rises about 1000 rpm with the shift that is very slow, worse with the more accelerator. But since it is not a diesel I would guess it is not a vacuum problem and probably needs a rebuild?
