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#1
03-22-2004, 10:24 PM
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83' 300SD car shuts off after letting off gas?
When I am driving as soon as I let go of the gas pedal fast for a sudden stop like a stop sign or stop light, my car would shut off. I am not sure why this is and it happens mostly in the summer. But I know it can be fixed so please help me.
My car has 156k miles 
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#2
03-23-2004, 09:08 AM
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Questions, questions...
Does the car return to idle normally or is this the constant case that when you take your foot off it dies?
__________________
'99 S420 - Mommies '72 280SE 4.5 - looking to breathe life into it '84 300SD Grey - Sold '85 300SD Silver - Sold '78 Ski Nautique
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#5
03-23-2004, 07:28 PM
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suggest you
check all linkages and the return spring on your emergency shut off lever.
Have a great day.
__________________
ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#6
03-24-2004, 10:15 AM
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I 2nd whunters idea
Sounds like the spring on the idle adjust bolt might be bad and when it retrns to idle it goes beyond.
I take it the normal idle is correct when it does idle? You can push the emergency stop and let off and see if the spring in the bottom of that bolt kicks it back up to the normal idle postiion. If not, the spring may be broken or just need lubrication. it's on the engine side of the injection pump and has a lock nut holding it in place. Mine was bad on the 1980 and would not allow me to use the emergency shutoff at all.
__________________
'99 S420 - Mommies '72 280SE 4.5 - looking to breathe life into it '84 300SD Grey - Sold '85 300SD Silver - Sold '78 Ski Nautique
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#7
03-24-2004, 10:21 AM
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When I read the Subject line of this thread, I was sure that your car had an intestinal upset, causing it to let off gas!
I had the mental image of your MB diesel sitting in your driveway f@rting.  and then shutting down.
__________________
Tony from West Oz. Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine. Josephine '82 300D 390kkm White/Palamino int. Elizabeth '81 280E, sporting a '79 300D engine. Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior Various parts cars including 280E, 230C & 300D in various states of disassembly.
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#8
03-24-2004, 11:31 AM
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Take the car for a run on the highway. Get back to your house and leave it running.. it may be running a bit rough.
Loosen the locknut and turn the bolt on the back of the injection pump 1/2 turn in and the engine should smooth out. If it already is in all the way, you will need a new rack dampner bolt.
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