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Need help no spark

839 views 5 replies 3 participants last post by  Hollywoodben 
#1 ·
Hey guys. I'm in a bind. Give you some history. My father was driving the car. He past away so I went blind intO it
It's. 1990 300e 3.0 6 cyln
Im getting gas but no spark.
I replaced the following. Cap. Rotor. Wires. Coil. Plugs. Crank sensor. ECM and still no spark.
Am I missing a relay or fuse somewhere that don't show in the Benz owner bible
Thanks Luis.
 
#2 · (Edited)
I would also replace the rotor arm and the OVP relay. Only use new genuine MB or KAE(hler) relays. This relay was updated numerous times.

Make sure you are running a group 49 battery for plenty of cranking power.

Put the original ECM back as it very rarely ever goes bad.
 
#6 ·
Ok I got spark now. The problem was the rotor my father bought 7 months ago. New problem.

I'm getting gas and spark. The car been sitting for 4 months. The car will turn over for 2-4 sec on the old gas. When I put new gas in the intake manifold. It will run for about 20 sec. then dies
What could be the problem. OLD GAS? After only sitting 4 months.
 
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