Did you see the note - "The DTC "9" can be displayed up to 12/92 even if no fault exists."

http://www.startekinfo.com/manual/volumes/e2/1_1/m11.jsp

You say it does not smell right so I guess the car is running rich so the would not be a leak in the air system, I would begin to check the engine temp sensor.Code 9 is Lambda sensor in the manual I got. When you already change the lambda sensor that could not be the problem, have you erased the code?

Thanks,

How does the temp sensor affect this? and which sensor will it be? this is an HFM engine by the way....

I appreciate it ...

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1993 300E, 2.8 M104 .....

I have the 104 engine E320 1994 and the engine temp sensor is on the water pump not on the top but down on the side. The temp sensor is controlling fuel mixture so the mixture is rich when the engine is cold and lean out when the engine get warmer.

Could this stop functioning correctly without triggering a code?

thanks

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1993 300E, 2.8 M104 .....

I guess so if the sensor give the wrong resistance, are the car smelling gas you should check the plugs do they have signs of being wet ( running rich ) or white from fuel starving if there is any sign of rich running , you might need to change the plugs also. If I remember right so have the engine lack of power when you are driving the car. If the plugs are white you must take a look at the fuel pressure and fuel volume, but then you should have hesitations at wot ( wide open throttle ).

Yes, not sure what it means though.....


what about the exhaust smell at cold starts?

thanks

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1993 300E, 2.8 M104 .....