TPS SPECIFICATIONS 1981-1985 SETTINGS

ALL GASOLINE ENGINES FROM 1981 THROUGH 1985

"Please discard 84-6(Gasoline)-80 and replace it with this update which provides specifications for 1985. " Listed below are all Throttle Position Sensor (TPS) settings for 1981 through 1985.

VOLTAGE SPEC.(+/-.1) CARBURETED ENGINES VIN (+/-.05) FUEL INJECTED ENGINE CODE ENGINES PROCEDURE

1981

Buick 3.8L A .97V High step of fast idle cam

Chev. 1.6L 9 .41V Stopped at curb idle Chev. 2.8L X .51V Stopped at curb idle Chev. 5.0L H .56V Stopped at curb idle

Olds. 5.0L Y .46V Stopped at curb idle

Pont. 2.5L 5 .51V Stopped at curb idle Pont. 4.3L S .41V ISC retracted at slow idle Pont. 4.9L Turbo T .40V ISC retracted at slow idle Pont. 4.9L Non-Turbo W 1.0V At 2000 RPM with ESC Pont. 4.9L Without ESC Z .35V ISC retracted at slow idle

1982

Buick 3.8L A .77V High step of fast idle cam Buick 3.8L Turbo "G" Car 1.28V High step of fast idle cam Buick 3.8L Turbo "E" Car 1.28V High step of fast idle cam Buick 4.1L 4 .97V High step of fast idle cam

Chev. 1.6L Minimum C .92V High step of fast idle cam system (Fed) Chev. 1.6L Full C .40V Stopped at curb idle function (Calif)

Chev. 1.8L L4 G .26V ISC retracted at slow idle Chev. 2.8L V-6 X,Z,1 .26V Stopped at curb idle Chev. All V-8 H,7 .51V Stopped at curb idle Pont. 1.8L 0 * Curb idle Pont. 2.5L R,2 .525V Ign. On, Engine Off 1983 Buick 3.8L A .86V High step of fast idle cam Chev. 1.6L C .92V High step of fast idle cam Chev. 2.0L P .525V Curb idle Chev. 2.8L L,X,Z,1 .26V Curb idle solenoid retracted Chev. 3.8L 9 .36V ISC retracted (min, idle) Chev. 5.0L H,S,7 .51V Curb idle Pont. 1.8L 0 * Curb idle Pont. 2.5L R,2 * Curb idle 1984 Buick 3.8L A .46V Curb idle Pont. 1.8L O,J * Curb idle Pont. 2.5L R,2 * Curb idle Chev. 2.0L P .525V Ignition on-throttle closed Chev. 5.0L G,H .48V Curb idle Chev. 1.6L C .92V High step of fast idle cam Chev. 2.8L L, X, Z, 1 .30V Throttle kicker retracted 1985 Pont. 1.8L O,J * Pont. 2.5L R, U, 2 * Chev. 2.8L X .27V Curb idle Chev. 2.8L MFI W .55V Curb idle or ignition "on" engine "off" Buick 3.0L MPFI L .50V retracted-min.auth. Buick 3.8L A .46V

Non-Adjustable

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.