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Mercedes 300E starting problems

Engine ticks over after releasing key, then dies after 2-4 seconds Has no aceleration. other times it has no problems starting

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  • Cars & Trucks Master
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If the problem is only on cold start check cold start injector, it cuts out after the engine worms up .a faulty thermostat can delay worm up.

Posted on Jun 16, 2014

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Posted on Jan 02, 2017

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SOURCE: ASD light is on in my mercedes 300E

First the sensor in the rear gearbox may be bad or corroded for sensing wheel speed. Also the engine wiring harness may be falling apart. From 1991-1995 the US made MB use biodegradable material on the wiring. When the insulation cracks you get shorts in the system. The same wires are in your EHA on the air inlet area. Check and replace as needed.

Posted on Jun 16, 2009

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SOURCE: 1988 300E mercedes stereo removal

remove center console lower wood and switches, remove ash tray, remove 2 screws to remove ash tray unit. Pop off face of radio, push in plastic tabs holding radio in console and pull unit out.

Posted on Jul 07, 2009

  • 4340 Answers

SOURCE: Turn off check engine light 1992 mercedes benz

The check engine light is on for a reason. You need to pull the error codes, and resolve all of the issues indicated. Then the light will go off.

If a condition were to happen, and be intermittent, the light would go out....But your description appears to have a fault condition detected. It is better and less expensive to fix the issue(s).

Posted on Oct 10, 2009

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SOURCE: location of fuel pump relay Mercedes 300E 1993

you need to remove the cover behind the battery .
fuel pump relay ( K27 )

I hope this can help you.

Posted on Mar 25, 2010

  • 4 Answers

SOURCE: My 1989 mercedes 300e won't start. Not getting any fuel

I had the same problem, my car would not start after parking it on the street. I followed protocol by checking vital components like spark to the plugs - OK had spark ...next was there fuel to the injectors - not sure because plug should be wet...but where dry. This can be misleading because injectors are mechanical and opens with vacuum from compression. Then I checked the two fuel pumps and one was bad, so I replaced both with a fuel filter also. The fuel relay was fine but I replaced it anyways. Now you would think it would start but no go.
At this point I was confused so I double checked all the connections electrical, fuel and so on. Luckily I stumbled onto a vacuum hose that connects from the IAC valve to the bottom of the fuel distributor that was disconnected. Wow the car started and the car is running fine, or even better. I think my problem was a combination of a bad fuel pump, vacuum leak and neglect. So try checking some of the things I did and maybe it will fix your problem.

Sincerely
Jon

Posted on Sep 29, 2010

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1 Answer

1992 mercedes 300e cranks over starts for a second then die


Could be a number of things. Start with the fuel pump relay. When your key is in the start/crank pos. it overides the relay as soon as you release the key to run possition the relay has to stay ingaged or the fuel pump will shut off. Also look in your owners manuel for impact or emergency fuel shut off switch reset.

May 13, 2011 | 1992 Mercedes-Benz Mercedes Benz 300 Class

2 Answers

I have a 1990 300e mercedes that will start but will only run for a few seconds then die? Does anyone have any suggestions on what it might be?


I don't know much about Mercedes, but that is exactly what most other vehicles will do when the MAF(mass air flow sensor) is faulty. It's always a good idea to find one at an auto wrecker, and try it. Or the fuel filter clogged? Hope this helps.

Apr 03, 2011 | 1990 Mercedes-Benz E-Class

1 Answer

1997 Mercedes 300E diesel, 186K. Multiple instances of Check Engine Lights, Oxygen sensor replaced 2x. Engine has stopped unexpectedly while driving, 2 codes (Check Oil Pressure & ETS) , alternator...


Try or (have your mechanic) remove oil pressure switch and clean. They gum up and it's a safety feature that when car is in accident and/or roll over, when oil pressure drops (eng quits) power to fuel pump shuts off. Sticking oil pressure switch is common on Benz Diesels

Feb 26, 2011 | 1990 Mercedes-Benz 300 Diesel

1 Answer

1988 Mercedes Benz 300E 3.0L Gasoline F.I. ''Sputtering at Idle


ok..you must have more than one car???? you don't drive the 300 atall im guessing. #1 start car drive up the road and \back to your house. #2 let it idle till problem starts. #3 once it does start with the problem keep it alive with the gas pedal. #4 once your have it safely from dying in higher rpms "rev it" like a kid would, you know like if you were gonna race some one lol. be careful not to over rev or damage engine. you should do this for five minutes no longer than that. #5 let it idle for another 5 minutes. #6 repeat every day until problem with idling decipates. it took mine 3 300e like 3 days of this. if your not going to drive the car once you get the problem out of the way. turn the car on everyday and let it idle for 5 minutes atleast and take it for a short drive once a week. they get lonelly you know lol. later on you can just turn the car on every 2 -3 days and let it idle but still take it on a short drive atleast once a week

Dec 31, 2009 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

89 300e 1st problem looses power when ac is on and 2nd ticking sound from the engine when idle? no sound of ticking when running? third i have the shop nearby changed the water pump about a 3 months ago...


1) the A/C will take some power away from the motor, If it is a big difference have the A/C system checked out.
2) the ticking can be from the lift or the timing chain from age...make sure the oil have been change with oil for the temp. ranger of where you live.
3) 95 C to 100 C is a normal ranger

Jul 22, 2009 | 1991 Mercedes-Benz E-Class

3 Answers

LOCATE FUEL FILTER ON 92' MERCEDES 300E


There is an in tank fuel screen where the fuel feed line screws into the bottom of the fuel tank. The is also a convertional fuel filter which is located just in front of the rear wheel on left or right side depending on model. I have a wagon and mine is on the right side. There is a plastic panel that you need to remove with a 10mm socket and a long extention. There are three screws to remove before you can get to the fuel pump/fuel filter area.

May 28, 2009 | 1992 Mercedes-Benz Mercedes Benz 300 Class

3 Answers

Engine rough in low idle


I would start by replacing your automatic air intake and throtle body sensor. Check these 2 things out and let me know.

tepfy

Feb 27, 2009 | 1992 Mercedes-Benz Mercedes Benz 300 Class

7 Answers

My 1989 Mercedes Benz 300E stalls after wet weather. It will initially start and I can drive for a few miles, then it will sputter and stall when accelerating after a stop, e.g. at a traffic light. It...


The inside of the ignition dealer (Delco) must be thoroughly cleaned and all metal parts passed with fine metal wool. Sparkplugs must also be cleaned or renewed. The air inlet-valve is very sensitive. The cylinder and the disc must be carefully cleaned with light metal wool and contact cleaner. The fault is due to the disc remaining stuck in the cylinder, so no idle function and malfunction of the auto-choke system. If this solution does not work, then the vacuum pressure is defective.Hint from a German Mercedes specialist.

Aug 03, 2008 | 1989 Mercedes-Benz 300-Class

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