Under the airfilter assembly and part of the Fuel distributator.
rarley the problem usually a vacuum related issue in mercedes 124s.
see my other post on 300E rough Idle. THis care uses a hybrid bosch mechanical electronic fuel delivery system. easy to diagnose and assumptions are usually wrong. try w124zone for basic information.
SOURCE: ASD light is on in my mercedes 300E
First the sensor in the rear gearbox may be bad or corroded for sensing wheel speed. Also the engine wiring harness may be falling apart. From 1991-1995 the US made MB use biodegradable material on the wiring. When the insulation cracks you get shorts in the system. The same wires are in your EHA on the air inlet area. Check and replace as needed.
SOURCE: location of fuel pump relay Mercedes 300E 1993
you need to remove the cover behind the battery .
fuel pump relay ( K27 )
I hope this can help you.
SOURCE: LOCATE FUEL FILTER ON 92' MERCEDES 300E
my 1992 mercedes 300e was towed hasnt started sinces ^t cranks starts for a second then dies
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