Question about 1990 Mercedes-Benz 190

2 Answers

Engine shut down

I'm always experiencing engine shutdown when running my mercedes benz 190e A/T. My 190E (1990) will usually start ok, but will start to run rough within 15 min or longer then stop. I checked the timing module output to the coil while this was happening with a timing light and a volt meter to the coil input to verify wether or not if it was the module or something else. The test did correspond to the engine rough idle (before it died), which makes me think that it is the timing module, but other inputs to the module, such as engine temp, crank position, etc. could be the be contributing to the problem and may not be the module itself. One thing that did happen before i started having these problems was that the alternator failed which may have electrically damaged some of the sensor inputs to the module. I hate to spend any money on a module when it could be a intermittent problem with a failing sensor. Any thoughts?

Posted by on

  • vanstot Apr 26, 2009

    i have the same problem, my 1992 190e 2.3 shuts off , within the last 2 weeks it has shut off 3 times, when you start it again it starts right away, i need help , it is a joy that car.

  • John Cracknell
    John Cracknell Nov 14, 2013

    my 230e is similar it start idles for 30 seconds then stops and if i touch the gas pedal it dies straight away why



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 170 Answers

The electrics in the Mercedes are notoriously flaky. A failing alternator would cause a low voltage condition that would cause the battery to run down but would not likely damage any of the computer modules. Have you REPLACED the fuses that protect the various fuel and ignition modules? Not just visually inspected, but REPLACED them? When I ran my Mercedes 123 series cars, I replaced all the fuses on Day One, regardless of how good they looked. Bosch fuses are known to corrode and cause intermittent problems similar to yours. If a fuse is overheating or the contacts are not good, a few minutes of driving could cause a problem that imitates expensive module failure. It happened with my Mercedes and my Volvos that used Bosch fuses.

Posted on Jan 15, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

If you have a skinny or normal arm like myself, reach under the intake manifold and ckeck the ~~3/4 inch rubber hose which connects the air/idle controll module. If that connnection is off ( you can't see it but can feel it) the engine will not run. Period. If is loose or cracked it would probobly synthysize the symptoms of which you speak. All of the associated vacuum hoses cost about 35.00 total, and while your have the idle air valve off you can check and clean the "internal solenoid gate valve.

It took me 2+ weeks of checking everything to hell and back plus throwing un-needed parts at the engine - all to no avail.

As soon as I plugged in the rotten ~~3/4 hose the engine ran fine.

Good luck, Leon

Posted on Mar 07, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Can't find the fuel pump relay on my 1990 190E Mercedes. Every thing I see says it is in the engine compartment behind the battery. Not so on my 190E. Where else could the fuel pump relay be?

Relay should be behind fuses under a screwed down cover. My question to you is why would you think the relay is bad? Check voltage at the pump as someone turns the car to on. At this age it's most likely a dead or dying pump. Other things to consider are OVP relay (behind the battery) , coil dead, general tune up ie plugs, wires, cap and rotor.

Sep 23, 2013 | 1993 Mercedes-Benz 190

1 Answer

1990 190e 2.6 shuts off while driving sometimes

try changing the ignition module ,,,,but be warned these are a bit on the pricey side ,around 1000€

Oct 10, 2009 | 1993 Mercedes-Benz 190

4 Answers

How to test fuel pump relay on a 93 mercedes 190e

Bleed the pump and this should solve the problem

Aug 02, 2009 | 1993 Mercedes-Benz 190

1 Answer

Engine shut down

regularly clean the carburettor of the car

May 17, 2009 | 1996 Mitsubishi Eclipse

1 Answer

Mercedes 190E difficult to start and sometimes won't

hi,best thing to do,install a pressure gauge,you can see the pressure of fuel while starting your engine,maybe one of this is defect, fuel filter,fuel pump motor and fuel accumulator,also check your rubber seal on injector,you can check your spray pattern of injector before replacing,ty

Apr 01, 2009 | 1990 Mercedes-Benz 190

3 Answers

Engine shut down

Check your fuel pump relay ,situated behind the battery next to the ABS and engine ECU it a small black box (not the one that says Klima)

Sep 29, 2008 | 1993 Mercedes-Benz 190

1 Answer

Radiator coolant

first question is after you changed your hose and refilled while the car was running with the radiator cap locked but loose with the heater on high and set on hot run the car till the thermostat opens shut the car down once it does anti freeze level will drop and air will rise and (extreme caution taken with drain pan below ) start the car use two people run it shut it down let air escape threw cap start again run a couple of minutes shutdown again let cool down take cap off restart car with cap off watch radiator level will somone lightly increases gas peddle refill level to top reinstall cap completely tight then let idle down some vehicles have a small bleeder mounted in the thermostat houseing or in line with the radiator circulation system

Sep 10, 2008 | 1992 Mercedes-Benz 190

Not finding what you are looking for?
1990 Mercedes-Benz 190 Logo

419 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

77499 Answers

Joseph Prosser

Level 3 Expert

772 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides