Also check your fuses some times sitting that long can corrode the fuse terminal
Turn off everything in the car that will make sound (blower, radio, etc.).
Turn key to "ON" (not start) position. You should hear the fuel pump prime the system.
If you can not hear the fuel pump, then I would suspect the fuel pump relay or the pump itself.
If your vehicle is equipped with a fuel shut off, then check either in the trunk behind a side panel or under the dash on the passenger side.
I hope this helps.
SOURCE: cold start valve problem
if you have an electric cold start valve make sure to unplug it and if keeps apling fuel with electrical conector unpluged that means the valve is not good, but if not then you have an electronic problem, possible a bad cold start sensor or cold start module or cicuit problem, and might be a time to take it to an electrical shop
SOURCE: mercedez benz fuel pump
If yours is the same model as mine (W201, 1993 model) on the left rear underbelly, just ahead of the left rear axle you will find a sub-assembly of the fuel pump and fuel filter. Caution, there is no way to isolate the fuel line, so if you're going to replace it, do the job on an almost-empty tank.
SOURCE: C320 not starting
If you hear a slight hum in the gas tank when you first turn on the key for 2 seconds the pump is working. Have the fuel pressure checked by a mechanic, it should be about 60 psi. It's usually located just before the injectors. Also have each injector wire pulse checked (light test) to see if there is enough spark to them. Have the ICM Ignition Control Module unit located under the rotor checked for enough spark also. My Trans Am had the same problem, turned out to be a shorted out injector causing it not to fire. If you can get to the wires to the injectors, pull one at a time while cranking to see if it starts or not. If you find that one that's faulty and unplugged the engine will start. That would be one problem. Also have the cars CPU checked to make sure it is not faulty also.
SOURCE: E320 mercedez no start after replace alternator
is the battery still strong?
i'm just wandering why did you replace the alternator ? ( the battery could have been weak )
or while replacing the alternator, you could have forgotten some essential wires that is connected to the starter.
please verify that all wires prior to replacement of the alternator have been restore back to its original location.
tnx 4 using fixya,
drcool
SOURCE: s500 turns over but won't start,is there a fuel pump reset?
hi,all the solution are right ,try to install a fuel pressure gauge if you have,if not ,observe your pump if working,in rear left,near wheel,you can hear if your pump is working,if not remove rear seat,check your fuel pump relay,mark letter t or number relay,ty
MB fault codes @ 005 "Engine coolant temperature sensor intermittent connection." It must be some loose connection somewhere. Check the fuses, relays or worse you may have a fried wiring harness, very common with MB's.
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