Yes that KE air -flow potentiometer ; very difficult to source out but sorts out all cold start and erratic warm-ups if the track is worn out .
Specific to cold starts only .
Ad

those pots are $2 ea at my local pick a part.

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

If you have a bad air flow potentiometer and one can be replaced with a new one why care if it is china that manufactured it? it might not last as long as the original but what after market item dose? ALL I am asking is there enough interest in it to make it worth my time to offer them! at a good price.

Just-In-Time, I appreciate your thoughtful offer. Those potentiometers are hard to find.

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2012 E350
2006 Callaway SC560

Bought mine from him, for a spare.
Air flow potentiometer Mercedes 190E 16V 300E 560SEL | eBay

SG-Motorsports Air Flow Meter Potentiometer Replacement

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85' 190E w/collector plates

yes and I was turned on to this by another member and thought I would make contact with the intention of stocking some, I just thought I would run this by every who keeps the older equipment, but I do not wish to have a hundred units sitting in limbo.

If this is for W123 300D 1984 model, I am interested. How much will it cost? Is this brand new or reworked?

On the LED being run from a PWM source.

If strobing is an issue, a capacitor could be added in parallel to the output to smooth things out. Depending on how large the cap is and max current availible from the PWM unit, a resistor might need to be added in series to the cap to limit charging inrush current when things are turned on.

( The resistor might be needed because a capacitor looks like a dead short until it charges up. )