car is '88 190e 2.3
My idle was high in N and P (around 1500)
Thanks to Duke I traced the problem to throttle position sensor (TPS) . Wide open position was working and closed position was not showing continuity at all. I tryed spraying everything with different contact cleaners but that didn't fix the thing.
I took a piece of wire and conected + wire from the microswitch with the + wire from the TPS closed throotle position. so when microswitch is activated, TPS is activated too...
everything works fine for now (idle in P and N is around 850 and there is no jerking when I engage in D or R)

Now my question is is this thing safe to do? Is there any risk of fire or simmilar?

Thanks

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1988 mercedes 190e 2.3 AT 160k miles