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  #1  
Old 11-29-2006, 10:58 AM
atombaum's Avatar
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1982 240D throttle linkage sticks

For about 2 months, the foot pedal for the throttle has been sticking. I have removed the foot pedal to verify everything is clear under it. I have inspected the linkages on the engine side. I found a bad plastic bearing at the part that screws into the firewall. Part number 123-300-13-40. Unfortunately, that did not fix it. Has anyone had this problem? It happens when starting from a stop or at up to about 45 mph. It feels like the pedal gets stuck about half way down. Have to release the pedal and push it down again. As you know, the pedal has to be mashed to the floor to get it to go. Any leads appreciated. Do I need to start looking at the linkage under the driver's kick panel?
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1957 W121 190 (history)
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1982 W123 240D (history)
1989 W124 260E
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  #2  
Old 11-29-2006, 11:17 AM
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mmmmmm Diesel...
 
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Quote:
Originally Posted by atombaum View Post
For about 2 months, the foot pedal for the throttle has been sticking. I have removed the foot pedal to verify everything is clear under it. I have inspected the linkages on the engine side. I found a bad plastic bearing at the part that screws into the firewall. Part number 123-300-13-40. Unfortunately, that did not fix it. Has anyone had this problem? It happens when starting from a stop or at up to about 45 mph. It feels like the pedal gets stuck about half way down. Have to release the pedal and push it down again. As you know, the pedal has to be mashed to the floor to get it to go. Any leads appreciated. Do I need to start looking at the linkage under the driver's kick panel?
Have you checked everything under the hood, and greased the ball and socket connections? Also, did you do any work on it prior to it sticking?
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  #3  
Old 11-29-2006, 11:21 AM
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Definetly check, clean, and lube ALL the linkages and pivot points under the hood. You might also try lubing up the point there the linkages go through the firewall.
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  #4  
Old 11-29-2006, 11:37 AM
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ditto on that. clean and lube everything that moves when you press the go pedal.
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past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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  #5  
Old 11-29-2006, 11:43 AM
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You have checked too see that the return spring is in place that is attached to that horizontal bar running along the fire wall?
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  #6  
Old 11-29-2006, 01:57 PM
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Recommended lube is ATF.

Len
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  #7  
Old 11-29-2006, 06:20 PM
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Originally Posted by Stevo View Post
You have checked too see that the return spring is in place that is attached to that horizontal bar running along the fire wall?
Yes, that spring is working well. Plenty of pull on it. Table 30 in the little black parts book shows some parts that I need to check out further. I think those are on the cabin side.
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1957 W121 190 (history)
1966 W108 250S
1967 W108 250S (parts)
1982 W123 240D (history)
1989 W124 260E
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