[W126 Coupe] Tranie Question

[Dawid Loubser]

Hi Camran,

That depends on two things: how hard you're pressing the accelerator  
pedal, and what mode ("S" or "E", if you have the switch on your car)
the transmission is in. (this is based on my experience of European  
560SEC, but it should be similar to your 420)

In "S" (Standard) mode, with pedal to the metal (i.e. which tells the  
car "go the fastest you can") it will only switch to 4th gear just  
under 200km/h [what a
lovely feeling], unless you ease the pressure on the pedal. In  
"E" (Economy) mode, however, even under full accelerator pressure  
(but not enough to
depress the kickback switch), it should switch over at around 3000RPM  
(around 100km/h). On Euro models, even in E mode, if you depress all  
the way
pressing the switch, it temporarily puts the transmission in "S" mode  
until you ease off the gas - I understand it's not the case with U.S.  
models. (i.e.
on a Euro, you can first-gear-start even in "E" if you hit the switch).

In "S" mode, with relaxed pressure on the pedal (say, halfway) it  
should also switch over to 4th quite quickly. You don't specifically  
say what pressure you're
applying to the pedal, but if it's hard pressure, it certainly should  
not switch over at low RPM - the whole point is to exert maximum  
power in each
gear for maximum performance.

However, if your car does not switch over with mild pedal pressure,  
and only does so when you almost completely let go of the pedal, then
you have a problem.

More details? I don't think I have enough knowledge to advise you on  
gearbox trouble, but maybe I can help the more knowledgeable readers
here get more insight?

regards,
Dawid



On 02 Apr 2007, at 4:37 nm., Camran Nassiri wrote:


> RPH- I have checked and re-checked the fluid level and it is right  

> on the second line.  However, as I drive the car it seems like it  

> dosen't want to change gears unless I let off the gas; especially  

> the last gear.  Getting on the freeway the other day I was at 75  

> MPH and let off the gas and that's when it switched to the 4th  

> gear.  Is that normal?

>

> Camran

> 90 560SEC, 91 420SEL

>