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Old 06-21-2002, 09:06 AM
Registered User
Join Date: Feb 2002
Location: Oakville, Ontario Canada
Posts: 26
Question 94 E320 rev limit problem

good day

i am having an intermittent problem when i depress the accelerator when in neutral ,, the tach will not go above 4000 rpm and starts to hesitate above 4000 rpm
while driving this does not occur under load tested while in auto transmission setting at 3 speed.
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Old 06-21-2002, 05:29 PM
Ali Al-Chalabi's Avatar
Senior Member
Join Date: Nov 2000
Location: Knoxville, TN
Posts: 1,837
There is a fuel cutoff at around 4000 rpms in order to protect the torque converter from high static pressures when the engine is being excessively revved when the car is in neutral.

I believe what you are describing is supposed to happen. At least that is the way it is with the 722.6 tranny, I could be wrong if the 722.4 doesn't have this protection function, but I believe it does.
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record
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Old 06-21-2002, 07:53 PM
David C Klasse's Avatar
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
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Yup, 4000 RPM rev-limiter in neutral is normal.
2006 E350 w/ 155k miles (Daily Driver)

1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
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1999 S420 (Mom's/Dad's)
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1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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