Since I am switching to a sequential fuel injection on my 300E for my turbo project I will be needing a TPS with a potentiometer in it to get a variable reading.
The problem is, I'm not sure if the original TPS is just a WOT switch or if it has a pot in it. I tested the TPS with a multimeter and it gives me sparratic readings in the kilo ohm range except for fully open or closed in which it shows a closed circuit at these points.
So, either the sensor is just old and needs to be replaced or it is just a two pole switch. If the TPS is not a variable resistor type or the sensor is bad. Is thier any replacement that would be close to a direct fit? I'm taking this question as a long shot but it never hurts to ask! Besides, if the TPS is variable and bad, I don't want to spend $450 for the whole throttle body!
I hope I explained my situation correctly, Any advice or info would be greatly appreciated.
Thanks!
Adam

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

Just an on/off switch for idle & for WOT.

The air flow position sensor IS(was) the variable pot.

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