Quote:
Originally Posted by montauk
I bought a BMW throttle motor and pedal. I'm waiting for my PMO EFI setup to be delivered. I bought the BMW stuff because it was not very expensive and because I've seen it used before.
I've got one problem (probably more, I'm new to all this). The BMW throttle motor is the older style with only one position sensor output. I need two on the throttle motor and two on the pedal. The pedal has two so no problem there.
I think I have four options for the throttle motor:
1 - swap out the BMW sensor for a newer one that has two sensors - I haven't found one that fits.
2 - Use the sensors on the PMO throttle shafts - I'm not sure that would work. I read somewhere that the ECU is looking for different voltages from the sensors so might need a resistor. The second problem is that they're not on the same shaft so even small differences in movement could be a problem.
3 - Attach a separate TPS to one of the throttle arms - seems easy but a bit of a kluge.
4 - Use the single sensor on the throttle motor and make up a second output with a small resistor (I read about this on a Link ECU forum). Not a great idea because I'm removing the safety factor of dual sensors.
Any ideas? Thanks
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Why not buy the throttle motor that has dual output and use that? Seems a much easier and cheaper (in time and money) than kludging something together.
I believe most dual output TPS have one that goes 0-5 and another that goes 5-0. A resistor will not help with that. There are dual output sensors available, but they are about the price of the cheap BWM throttle bodies.