Stalling - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 04-29-2014, 08:38 PM Thread Starter
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Stalling

84 380sl
My 380 stalls on acceleration I have gone thru the vacuum system and fixed a couple of minor leaks but it did not help. Does anyone have any ideas where I go from here
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post #2 of 8 (permalink) Old 04-30-2014, 05:44 AM
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Last tuneup was when?
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post #3 of 8 (permalink) Old 04-30-2014, 09:18 AM
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fuel pressure test first . a bad fuel pump relay will cause this at time [ behind glove box ]
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post #4 of 8 (permalink) Old 05-06-2014, 05:26 PM Thread Starter
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Plugs, wires. dist cap and rotor button in the last 50 miles
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post #5 of 8 (permalink) Old 05-10-2014, 08:04 AM
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I have a similar problem with my two 'best mates' 1993 190E, 1.8 petrol WDB 201. and 1971 350 SL (107 SL).
Both sometimes will not start and at other times will start but falter or stall when attempting to move off. Or when having been driving for some time will simply die and require recovering to home.
Annoyingly they may well start having reached home and then run normally till next time problems show. Done all normal checks, cleaning etc, but as same problem still persists with both HELP!!
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post #6 of 8 (permalink) Old 05-10-2014, 12:37 PM
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May apply to all or none, but whenever I hear of repeated and hard to diagnose stalling I always remember my "summer of hell" where I replaced so many things only to find out it was a clogged fuel tank strainer, the one inside the tank at the pickup point. You drain the tank, unbolt from below and then flush tank while inspecting the screen for crud. Usually they will be mostly compacted and the action of moving then stopping caused the debris to collect then re-dilute into the gas, usually you will have more stalls when the fuel level is lower maybe 1/4 tank and less, or after driving for a while as the debris again builds up. If this is the cause it's a god idea to go ahead and reseal the inside of the tank as well since you probably have a problem with rust as well as particulates clogging.

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post #7 of 8 (permalink) Old 05-12-2014, 09:30 AM
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if you have a bad gas tank , the car will stall with under 1/2 tank of fuel , at first when making a sharp turn ..the fuel pump relay also will cause this kind of problem .so if you fill tank , and problem is still there , look at the relay circuit board .also a bad ignition module [ silver box], will cause the pump to shut off .
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post #8 of 8 (permalink) Old 06-22-2014, 09:44 AM Thread Starter
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Stalling

I don't understand it but I took the car to an old time Mercedes mechanic After driving the car he checked all the belts and found the alternator belt loose. Tightened it ran the car for a few minutes. We took it on the road and it drove like a dream. He said the voltage was low or it was fluctuating and screwing the electronics up. I still don't understand it but it runs great
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