Z32 300ZX hard idle switch input necessary?

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Pearl_TTZ
Posts: 3
Joined: Mon Jun 13, 2016 7:40 pm

Z32 300ZX hard idle switch input necessary?

Postby Pearl_TTZ » Sun Jul 19, 2020 5:23 pm

300zx throttle position sensor is a horrible device with 2 connectors. The grey connector is actual TPS and the black connector on the sensor itself is a "hard idle switch". On a factory car with stock ECU, the hard idle switch significantly affects the way the car runs.

I was wondering if Haltech uses hard-idle switch input/output to run the car? I think Haltech only uses the TPS signal and can be calibrated by 0% (throttle closed) and 100% (wot).

Does anyone know if a hard idle switch needs to be plugged in?

Thank you.

JimKden
Posts: 560
Joined: Wed Jan 12, 2011 3:28 am

Re: Z32 300ZX hard idle switch input necessary?

Postby JimKden » Mon Jul 20, 2020 12:02 am

Hard idle switch is not needed. The tps calibration routine sets the upper and lower voltage limits for the tps. The ECU uses that calibration to detect an closed throttle and initiates the idle settings.


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