Replacment engine problem (w211 320 petrol)

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Piers

New Member
Joined
Jan 21, 2008
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3
I have just bought an 04 W211 320 (Petrol) estate that has had a replacement engine fitted. The emissions light is permanently on, and sometimes when staring the engine I get an ESP failure warning. I am told, but have not confirmed that the replacement engine is from an 05 SL. The car feels very sluggish, especially at very low speed and between 50 – 70 mph. With ESP switched off the car feels much better, but still not quite right. I suspect that the engine mapping is wrong for the car-engine combination, but frankly this is just a guess.

Any suggestions about what to check, or can someone recommend a Merc specialist/tuner not to far from London.

Incidentally, would this car have left the factory with a straight 6 or a v6?

Thanks

Piers
 
It would have left the factory with a V6 engine but I have to ask, why has it already had a new engine. Definately sounds related to the engine swap but I would have thought the set up on an SL would have been similair.
 
thanks,

It had a replacement engine because the sump cracked when the previous owner lost control, left the road and hit a rock.

I am in the salvage business, the car was oringinally sold by my company on behalf of the salvage agent who had purchased it from the insurer. I then purchased it with the replacement engine fitted.

Fortunatley it was cheap!
 

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