Idling high n low

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Joined
Mar 9, 2009
Messages
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Location
Malaysia
Your Mercedes
W124, Volvo 850, Volvo 240
I just bought a W124- 230E Manual. The previous owner has changed the engine from a 2.0 single chain to a 2.3 twin chain engine.

When the a.c is switch off the car idles at 1500 rpm and when it is on it is 700rpm and not smooth.

I have just changed the speedo cable because the the needle was not working, now when I drive sometimes there is a loud buzzing noise coming from behind the meter cluster. It is not any speed sensor because the sound comes at any speed.

I need to lock and unlock the car from the boot because if i use the driver door only the driver door will unlock or lock and not the whole car.

Sorry for the complaints, I hope someone can help me with this problems.
Thank you.
 

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