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  #1  
Old 12-18-2002, 09:08 PM
black500
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Unhappy wondering if can be fixed temporarily

i need to know if a throttle actuator can be repaired without being totally taken off and replaced by a new one need help please because a new one is so expensive or if i was to purchase a used one would that work or am i headed for trouble with it in case that fails this is for a 93 400sel
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  #2  
Old 12-19-2002, 07:03 PM
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What's wrong with your car???
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  #3  
Old 12-19-2002, 08:52 PM
black500
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throttle actuator

the asr lite is on and also off whenever it feels like coming on it does and then i turn the car off and the light goes off for a while like the whole day or so and when its cold in the morning it comes on at first start so i let the car idle with the light on and then once its warmed up i turn it off and restart it and the lite is gone again some times it will come on while driving on a bumpy road same thing i put the car in neutral turn it off and restart it lite gone i had the car diagnosed and they told me the vehicle needs a throttle actuator which i was told controls the asr,cruise, and throttle they told me that would cost about $1150 total
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  #4  
Old 12-19-2002, 10:53 PM
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electronic throttle actuator bad?

without testing the unit, I would bet some money the problem is the wires inside the wiring harness have no insullation left on them just a bunch of dust.

It's a pain in the aX##, but the wires can be replaced one at a time to rebuild the wiring harness. Alternative is buying a new one. Old used ones are also likely full of crumbling wiring insullation (biodegradable plastic!)
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  #5  
Old 12-19-2002, 11:00 PM
black500
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well this mechanic told me that everything but the mass air flow sensor would be replaced because when you call for the part at a dealer or otherwise it comes with a gasket which im assuming is for the intake
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  #6  
Old 12-20-2002, 11:41 PM
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I posted a reply a few weeks ago about this. I think it was "ASR 400E"? MB dealers have some old bulletins about this problem. The actuator could be the problem, but there's also an updated E-Gas module. The "bumpy road" situation could also indicate a faulty CTP switch. It's a small and inexpensive switch located on the gas pedal. Make sure you get a thorough diagnosis before you spend big bucks on somebody's guess!
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Old 12-21-2002, 01:17 PM
black500
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you know what that does make a lot of sense because sometimes when i try to give the throttle full throttle it sticks a little allmost at the end of the pedal but would that switch that you are talking about cause the asr lite to come on
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  #8  
Old 12-21-2002, 02:07 PM
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Yes, that switch will make the light come on as well cause a "limp home" condition. It will also store a fault code (224) in the E-GAS control module. Find the post titled "ASR 400E" and read my reply. It was only a few weeks ago. Sorry I can't tell you how to go directly to it, I'm not the most PC savvy person! Anyway, check it out. There's some good info there.
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  #9  
Old 12-21-2002, 03:57 PM
black500
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thanks appreciate it anybody else with information it would be a great help

Last edited by black500; 12-23-2002 at 06:11 PM.
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