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Old 10-25-2005, 10:16 AM
blueeagle289's Avatar
Blue Eagle
 
Join Date: Nov 2003
Location: Dallas, TX
Posts: 457
Wink 89 420SEL kickdown

This model Mercedes seems to have a kickdown system based on vacuum or electronic status, in addition to the obvious switch on the floor under the accel pedal !? It sometimes comes in when I really don't want it to, either in Cruise Control "Resume" mode -- or when I am accelerating but not trying to set a new speed record. Someone suggested that the vacuum modulator could do this ?? Otherwise, is there some way to reduce the effect of this system or turn it off completely ?? I don't like the "hard clunk" that comes from the tranny and/or drive train when it engages particularly and don't know if that kind of fairly loud mechanical noise is considered normal on that car. Please advise from your knowledge/experience regarding that model.
Thanks, Ben Carter

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Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)
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