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: 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: driving car it just quit, will not start back
fuel pump relay behind plastic cover that is behind battery. there are 2 black relays ine is climate control and the other is fuel pump. the climate control will say klima on it. Bridge circuit 30(hot at all times) and circuit 87(consumer) with a fused wire and the vehicle should start if that is the problem. In all honesty it sounds like an ignition problem. I would remove the dist. cap if it is a cis. if it is electronic fuel inj. try wiggling the crank senser harnes and see if it starts. the early lh and hfm cars had major wireharness issues
SOURCE: fuel pump 1998 E320
210.065- is your model indicater and your e class is a 210 chassis and your V-6 engine a 112 engine designation. You have the v.i.n, # in l side of the dash near the windsheild and you whole engine number is on the block
SOURCE: Runs for 20 minutes, gets hot and shuts down. Still has spark
check these things thermostat, water pump, Main engine fan, Aux fan, strip fuse for Aux fan, Aux fan relay behind fuses in screwed down cover. Fuel pumps make alot of noise on these might want to check/replace check valve after them.
Also a tune up of coil, cap, rotor plugs and wires is always a good start.
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