Throttle restrained below 4000rpm?
01-25-2011, 04:26 AM
#1
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ML 55
Throttle restrained below 4000rpm?
Is it some built-in safe restraining?
Because when I hit 4000rpm it is like a flick of a switch and it realeases a lot of more hp by itself, without changing the pedal (floored).
Is this correct or is it some problem with the car?
Question 2:
Power steering is really heavy in slow speeds.
Oil and so is of course checked.
I even tried to override the plunger in the power steering by supplying 12V directly. And then it was easy to steer (at low speeds....).
I believe this is a common problem but do anyone know if it is easy to fix?
Because when I hit 4000rpm it is like a flick of a switch and it realeases a lot of more hp by itself, without changing the pedal (floored).
Is this correct or is it some problem with the car?
Question 2:
Power steering is really heavy in slow speeds.
Oil and so is of course checked.
I even tried to override the plunger in the power steering by supplying 12V directly. And then it was easy to steer (at low speeds....).
I believe this is a common problem but do anyone know if it is easy to fix?
03-18-2011, 01:42 PM
#3
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Location: minnesota
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1999 E320, 2000 ml430
the 4000 rpm cut off is the rev limiter.
hard to steer is possible plunger valve or control unit. Mercedes had a bulletin to replace control unit so i would get a scan tool and check for fault codes in the traction computer.
hard to steer is possible plunger valve or control unit. Mercedes had a bulletin to replace control unit so i would get a scan tool and check for fault codes in the traction computer.
