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Discussion Starter #1 (Edited by Moderator)
My car rpm rise to 1800 but when you press the throttle valve butterfly valve it reduces.
What are the possible causes please?
S320/140 M104 Engine.

Welcome to Benzworld Momodou.
In the Future Please don't write your whole Question into the Thread as a Title .The way i modified it above is enough , we are all W140 Enthusiasts here & know .
Here is your Thread Title :
Engine rpm not steady and rise to 1800 and be steady there but when you press the Venturi/butterfly valve down it reduces M104 engine, what are the ca
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