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Thread: TPS Sensor Info

  1. #1
    Administrator 88hurstolds's Avatar
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    Default TPS Sensor Info

    QUAD R-4 COMP Rochester E4MC Carburetor:
    Carburetor No.
    Engine VIN# Year Inj. (Orig. Equip.) TPS Voltage
    ______ ____ ____ ____ _____________ ___________

    5.0L Y 1981 N/A
    17081253 .46 (A)
    17081254 .46 (A)

    5.0L Y 1982 N/A
    17082253 .46 (A)
    17082255 .46 (A)

    5.0L Y 1983 N/A
    17083250 .46 (C)
    17083251 .46 (C)
    17083252 .46 (C)
    17083253 .46 (C)

    5.0L 9
    17083553 .46 (B)

    5.0L Y 1984 N/A
    17084252 .46 (C)
    17084254 .46 (C)
    17084256 .46 (C)
    17084258 .46 (C)

    5.0L 9
    17084554 .46 (B)

    5.0L Y 1985 N/A
    17085282 .41 (C)

    5.0L 9
    17085554 .41 (B)

    5.0L Y 1986 N/A
    17086008 .41 (C)

    5.0L 9
    17086009 .41 (B)

    5.0L Y 1986 N/A
    17086077 .41 (C)


    Notes:
    A=Stopped at curb idle.
    B=ISC retracted at slow idle.
    C=ILC retracted.
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  2. #2
    Administrator 88hurstolds's Avatar
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    Default

    TPS setting: approx. Between 0.41 [VIN Y] at min idle, (ISC retracted, A/C OFF), and 5.0 volts at WOT (<1 volt at idle, typically between 0.4-0.5 volts for Olds G-body 4 bbl). [VIN 9 is .046 @550 idle, A/C off]

    1. Drill a 5/64" (0.078") hole about 1/16" to 1/8" deep in the aluminum plug covering the TPS adjustment screw. Be careful not to damage the adjustment screw.

    2. Start a No. 8-1/2" long self-tapping screw into the plug enough to ensure good thread engagement.

    3. Pry the plug out with a wide-blade screwdriver. Discard the plug.

    4. Unplug the electrical connector at the TPS, then connect jumper wires between the three terminals of the connector and TPS.

    5. Connect a digital voltmeter across the center and lower terminals: terminal "B" and terminal "C". Only a digital voltmeter with 10 megohm input impedance or higher can be used. Conventional voltmeters do not have sufficient resistance to obtain accurate readings.

    6. With ignition switch ON, engine and A/C OFF, turn the TPS screw with tool j-28696 or BT 7967-A (or equivalent) to obtain the voltage specified in the carburetor charts. (Speical tool made for TPS hex headed adjustment screws) I think the hex driver tool size is 2.5 mm hex.

    7. Turn off ignition. Remove jumper wires and voltmeter, and reconnect the TPS connector.

    8. Install new tamper-resistant plug, until flush with boss. If not available, use silicon RTV sealant or equivalent.
    Lightning Rods repair service:CLICK HERE
    Seller Feedback:CLICK HERE
    1988 H/OCA Advisor
    88 H/O #1 of 4
    88 CSC White/Claret - T-tops
    88 H/O Triple Black
    87 442 Black/Gray - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Claret - T-tops
    85 442 White/Sage
    84 H/O Aero Commemorative #2199 - Sunroof
    83 H/O #2400 Sand Gray - Sunroof
    83 H/O #1607 Sand Gray - T-tops
    83 H/O #727 Maple
    "Keep them Rockets lit!"

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