If you haven't already, please check the Hall Effect Sensor. That little bugger can cause similar situations.

The fact that you were turning probably means nothing. More significant is the fact that you were coasting and the car stalled out while coasting (did it feel as if some unseen hand had turned the ignition key and shut the car down?).

Some M103 engines, in certain MY W124, develop a "cutting out while coasting condition." Do a search in "stalling" and/or "stalling + w124" and you will find plenty of company in your "misery."

Good luck, and if you find a cure, please report it here, so that we can add to the "knowledge library" regarding this issue.

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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

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On my 89 w124 it is between the battery and the passenger firewall behind a plastic splash shield, access from battery side. It is in the general vicinity of the OVP relay. To see if it is indeed a fuel pump relay test it when a stall has occured and it won't re-start. Have someone turn the ignition on while you listen for the fuel pump at the rear passenger wheel. You should be able to faintly hear the fuel pump humming for a few seconds after the igniton is turned on. In any case, a spare fuel relay kept in the trunk for emergencies is good policy.

Jorg

hello BENZ-LGB, I have experienced same stallings of the engine of my car. M103, 260E, 1988 and changed a lot of parts.
Was your car stalling? Have you changed the one on your car? Did it solve the problem?

How do you test the Hall Effect sensor? where is it located?

My car does not have a tempomat, do yo think there is one?

Thanks in advance.

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Keep us posted especially if your problem is solved
Present cars:
My car: E-class 420CDI, 2008, W211, V8, 180 000km

Wife's one: C-class 220CDI Sport Coupé, Euro, 2002, W203. 345 000km

Son's one: GLK class 220CDI, 2009, W204

Sold E class 260E, W124, 1988 beloved car sold after 489 000 kilometres of reliable services (engine M103, clutch and 5 speed manual gear box all original).

E-class, W210 320CDI, 2000[/B], 225 000km, Sold

CC, the Hall Effect Sensor is located on the back of the instrument cluster, so you need to remove it. I am not sure how itis tested. I know my mechanic replaced it and it cured the stalling at that time.

The stalling returned, several months later. My mechanic, Enrique suspected the wiring harness (yes I know I have a 1989 300TE and supposedly these cars do not have a problem with the wiring harness). Rahter than replacing the entire harness, he tested various wires/circuits that are related with the coasting-idle circuit.

The way he explained it to me, when the car is coasting, some sort of fuel management circuit cuts back on fuel, in order to improve fuel economy. The bad wiring sends a spurious signal to the circuit and it shuts off fuel supply completely.

I am not sure about hte explnation, but it makes sense that a spurious signal, while coasting, is causing theengine to basically shut itself off. When you restart the engine, it resets the system and then the car runs fine. The fact that the car restarts right away tells me that there is some sort of signal going out someplace. Restarting the car is like rebooting the computer. Right?

Since then, the car has continued to stall, but not wiht the same frequency as before. Now I can go for weeks of driving and nothing,no stalling, no problem.

The car runs well and the idle is creamy smooth (except of a VERY occasional burp or hiccup).

I have also recently replaced the distributort cap and the rotor. And I replaced the Idle Control Valve (ICV) and the vacuum hoses leading to and from the ICV.

This last repair was recommended by both my mechanic and by Psfred (who posts here regularly). Since replacing the ICV and the vacuum hoses the car has not stalled. But like Isaid it can go for weeks w/o a problem. So who knows, this may be the cure for my 300TE.

What parts have you replaced thus far?

If you list the parts/repairs maybe others can help out as well.

If you go to any Benz website, you see that many W124 owners have faced similar issues. Merkey, a new poster here, recently bought a 300TE after the PO got tired of dealing withe the stalling.

Youfigure that by now BENZ would have come up with a universal cure.

Good luck.

__________________
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!

Check my post #13 in this thread. I think that my problem is solved, however, only time will tell.

I had the same problem. I replaced the fuel filter, and I never had the stall again.


Good luck
Sam

Yep, time will tell.

There does not seem to be one specific cure. Symptoms are similar across the board. "Cures" differ from one W124 to the other.

__________________
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!