Outpout Voltage Wire, Throttle Position Sensor???? - FirebirdV6.com/CamaroV6.com Message Board

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  • Outpout Voltage Wire, Throttle Position Sensor????

    I posted this over in general tech, but I don't really know how to classify it. So I'll delete whichever thread doesn't gets the first response. Anyways....

    I picked up a ZEX wet kit a few days back and need some help with the install. The kit has their new Nitrous Management Unit (NMU). I can't seem to find the voltage output wire on the throttle position sensor. A little info from their site:

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    ZEX has designed the ultimate “Smart” Nitrous System. The ZEX Dry Nitrous Kit uses their patented fuel control technology, which reads the nitrous bottle pressure and adjusts the fuel enrichment accordingly. Changes in outside temperatures change the pressure within the nitrous bottle. So on a cool day, the pressure is lower and therefore the system will add less fuel enrichment. Conversely, on a hot day, bottle pressure will increase and so the system will add additional fuel to compensate. This unique feature ensures that you always have the optimum ratio of nitrous and fuel... never too rich, never too lean. The results are maximum power and equally important, maximum safety!

    The brain of the nitrous system is the ZEX? Nitrous Management Unit. All major components of the nitrous system like the solenoids and sensors are contained inside the NMU, which means under your hood stays looking good. You won't have any unsightly solenoids or wiring scattered all throughout your engine compartment, which is another safety concern solved.

    ZEX Nitrous Kits only activate when you hit full throttle. This means you can sit at the line with the system armed and your hands on the steering wheel. When you hit full throttle, the nitrous automatically kicks in, you don't have to fumble with switches and steering at the same time. When you let off the throttle, the nitrous shuts off. Our difference in approach results in more horsepower per nitrous used through all bottle pressures.

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    So, I need to pick up on the changes in the voltage at the TPS. I've got a 99 Camaro with the Electronic Throttle Control, and I need to find a "throttle position sensor output voltage wire". To sum it up, I need some help tracking down this wire.
    If none of that made any sense, lemme know and I'll try to reword it.
    Last edited by silvachris1; 10-02-2006, 09:02 PM.
    ~Chris<br />1999 Hugger Orange Camaro<br /> <a href=\"http://www.cardomain.com/ride/273836\" target=\"_blank\">http://www.cardomain.com/ride/273836</a> <br /><br />†…faith…hope

  • #2
    Re: Outpout Voltage Wire, Throttle Position Sensor????

    Up up and away for the graveyard crew.
    ~Chris<br />1999 Hugger Orange Camaro<br /> <a href=\"http://www.cardomain.com/ride/273836\" target=\"_blank\">http://www.cardomain.com/ride/273836</a> <br /><br />†…faith…hope

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    • #3
      Re: Outpout Voltage Wire, Throttle Position Sensor????

      I have a Nitrous Supply system on my 01. It triggers using TPS and I wired mine to read the TPS#1 output. I'll bet 99 is similar though perhaps not exactly the same. In your 1999 Factory Service manual, in the 3.8L engine controls section, you'll find a wiring diagram for "Tac Module, TAC". Look for the "TP Sensor 1 Signal" or "TP Sensor 2 Signal". Measure both with a DMM to see how they work. Some ETCs have both TPS es going the same way and others, such as early C5 Vettes, have the two TPSes running opposite, ie: one of them is 0-100% and the other is 100-0%. You want one that gains voltage as you open the throttle.

      I don't know how ZEX configures their "Nitrous Management Unit" but Nitrous Supply has their "WOT Switches" set for the max. TPS you'd usually find on a V8 which is 5 volts or so. Some 3.8s have max. TPS voltage around 3.3v so you may need to adjust this Nitrous Managment Unit's triggering to make sure it hits just before you get to WOT.
      Last edited by Hib Halverson; 10-15-2006, 10:14 PM.

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