Gearbox Lock-up question
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 54
Likes: 5
'06 e320cdi
Gearbox Lock-up question
Hello,
I have w211, 270 CDI, automatic, '03. I think i have trouble with the gearbox. There are no error codes when testing.
I want to know, what is the type of gearbox, 722.6?
What's the difference between gearbox/driving w211, w203 with the same engines?
I used to drive w203, 270 cdi. When push the pedal, no metter speed, rpms, the engine start reving and gearbox look's like is slipping.
On my Merc, when i push the pedal, the engine stay with the same rpms like the gearbox. There is no slipping.
For example, when i start from first gear, push the pedal, rpms go to 2000+ rpms, and stay there on some constant rpms, until gearbox start slipping and car is speeding up. BUT, when gear is different from 1st, there isn't this way. On 2st,3th gear, 1500rpms, push little bit the pedal and rpms stay with car throttle. Maybe lock-up is always ON, when not on 1st gear.
When rpms are on 1200,1300 and push the pedal, rpms no goes to 2000,2500rpms and stay there, until the gearbox reach them.
When push harder(not kick-down) it just shift down gear.
I recond. torque converter and change ETC.
Please, can someone explain how lock up is working on this models.
I have w211, 270 CDI, automatic, '03. I think i have trouble with the gearbox. There are no error codes when testing.
I want to know, what is the type of gearbox, 722.6?
What's the difference between gearbox/driving w211, w203 with the same engines?
I used to drive w203, 270 cdi. When push the pedal, no metter speed, rpms, the engine start reving and gearbox look's like is slipping.
On my Merc, when i push the pedal, the engine stay with the same rpms like the gearbox. There is no slipping.
For example, when i start from first gear, push the pedal, rpms go to 2000+ rpms, and stay there on some constant rpms, until gearbox start slipping and car is speeding up. BUT, when gear is different from 1st, there isn't this way. On 2st,3th gear, 1500rpms, push little bit the pedal and rpms stay with car throttle. Maybe lock-up is always ON, when not on 1st gear.
When rpms are on 1200,1300 and push the pedal, rpms no goes to 2000,2500rpms and stay there, until the gearbox reach them.
When push harder(not kick-down) it just shift down gear.
I recond. torque converter and change ETC.
Please, can someone explain how lock up is working on this models.
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 54
Likes: 5
'06 e320cdi
DAS Xentry shows correctly TCU details.
I checked in EPC with database from '08 that this TCU (A 032 545 14 32) is compatible with my car:
Europe Car FG 004 006 016 026 042 061 065 070 080 082 083
Also checked in newer version, Sept, 2013 and there are was only two models for this TCU - 028, 076
I'm confused... advice, please?
I checked in EPC with database from '08 that this TCU (A 032 545 14 32) is compatible with my car:
Europe Car FG 004 006 016 026 042 061 065 070 080 082 083
Also checked in newer version, Sept, 2013 and there are was only two models for this TCU - 028, 076
I'm confused... advice, please?
Senior Member
Joined: Mar 2009
Posts: 430
Likes: 6
From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
Torque converter is programmed to slip in 1 and 2 gear at least on W211 models with diesel and V8 engines. It will lock above certain rpm's up to the red line, but in normal driving you can fill it slipping. When is cold my car fills like it has 7G box simply because is slipping on 1 and 2 gear. You can try to drive it with full throttle and see how is acting.
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 54
Likes: 5
'06 e320cdi
Torque converter is programmed to slip in 1 and 2 gear at least on W211 models with diesel and V8 engines. It will lock above certain rpm's up to the red line, but in normal driving you can fill it slipping. When is cold my car fills like it has 7G box simply because is slipping on 1 and 2 gear. You can try to drive it with full throttle and see how is acting.
But on the move, on low rpms i think there is no slipping. It's like car with manual gearbox, driving on higher gear with low rpm - when push little bit throttle, no slipping.
Senior Member
Joined: Mar 2009
Posts: 430
Likes: 6
From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
I think, my gearbox is always locked. Only when start from 0km/h and accellerate on first and second gear it's feels like slipping how you said.
But on the move, on low rpms i think there is no slipping. It's like car with manual gearbox, driving on higher gear with low rpm - when push little bit throttle, no slipping.
But on the move, on low rpms i think there is no slipping. It's like car with manual gearbox, driving on higher gear with low rpm - when push little bit throttle, no slipping.
This is exactly what mine does, it slips only when starting from stand still and only in 1 and 2 gear, but after this is locked even if downshift to 2 or 1 gear. If I remember correctly from the info I read about 5G, slippage will happened until ATF warms up to certain temperature - like safety future.
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Thread Starter
Junior Member
Joined: Nov 2013
Posts: 54
Likes: 5
'06 e320cdi
This is exactly what mine does, it slips only when starting from stand still and only in 1 and 2 gear, but after this is locked even if downshift to 2 or 1 gear. If I remember correctly from the info I read about 5G, slippage will happened until ATF warms up to certain temperature - like safety future.
I tested w203, 270cdi where thinks was different from w211. On w203, there is almost all time slippage(i'm not sure in that w203 condition, if lock up wasn't disabled)
Also in w211 manual, there is graph where shows how lock-up is working. In my opinion when push the throttle have to start slipping.
http://bayhas.com/mercedes/w211/cont...torqueconv.htm (direct link to page)
http://bayhas.com/mercedes/w211/contents/ (link to main page)
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Senior Member
Joined: Mar 2009
Posts: 430
Likes: 6
From: USA, EU
06 E320 CDI (GONE), 14 Jeep GC EcoDiesel, 01 Disco II (GONE), 09 BMW X3 3.0 Si Xdrive
Thanks for good explanation isstay. I thought that mine gearbox is not ok, lock-up/solenoid for lock-up/tcu e.t.c..
I tested w203, 270cdi where thinks was different from w211. On w203, there is almost all time slippage(i'm not sure in that w203 condition, if lock up wasn't disabled)
Also in w211 manual, there is graph where shows how lock-up is working. In my opinion when push the throttle have to start slipping.
http://bayhas.com/mercedes/w211/cont...torqueconv.htm (direct link to page)
http://bayhas.com/mercedes/w211/contents/ (link to main page)
I tested w203, 270cdi where thinks was different from w211. On w203, there is almost all time slippage(i'm not sure in that w203 condition, if lock up wasn't disabled)
Also in w211 manual, there is graph where shows how lock-up is working. In my opinion when push the throttle have to start slipping.
http://bayhas.com/mercedes/w211/cont...torqueconv.htm (direct link to page)
http://bayhas.com/mercedes/w211/contents/ (link to main page)
W203 should have different TCU programming even with same engine/trany combo, because other factors need to be considered, or maybe it has problem with the gear box.
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 54
Likes: 5
'06 e320cdi
I have another question about low rpms. Рegularly, when throttle is hold almost on idle, so i drive with constant speed, gearbox is on higher gear and engine is on low rpm - 1000-1300.
Is this normal? I think it's too low rpms, they have to be higher, 1500 to be minimum, after then to shift down gear? Also when slow down, gear down shifting happened when reach 1000,1100 rpms?!
Isstay, how is your car at this situations?
Is this normal? I think it's too low rpms, they have to be higher, 1500 to be minimum, after then to shift down gear? Also when slow down, gear down shifting happened when reach 1000,1100 rpms?!
Isstay, how is your car at this situations?
