1. Hit the Exit button on the configuration box. Turn ON the ignition, but do I'll post a pic of it later. Throttle Position Sensor Replacement Cost The average price for replacing a throttle position sensor varies from $159 to $211. One little secret that helps understand the TP pin (throttle angle) is that the ECU TP pin has a 470k ohm pull down resistor inside ECU so that if the TP pin goes open the ECU sees 0 volts (for safety) Turn the throttle down by tightening the TBI's screws. Secure the bolt at the bottom of the TPS sensor and attach the hoses to the sensor and inlet pipe. TV= throttle valve, that is the butterfly valve, dead center inside theTB,the Throttle body. The POT side, has 2 rules (besides that the actual accuracy is very crude, some pots are 3k and some are 6k ohms, a crude device. 2) (but can if the ISC goes dead and other failures, prevent air flow to the engine or very weak fueling as this idle switch will shut down, the ISC) Pin D is Cut or the TPS is bad. (for back probing or pin probes with no damage to the pins.) The TPS isinfamousto go intermittent first, then fail hard. Easy to install to replace 20 year old components. Push the multimeter pin into the TPS screw and check the voltage. Be sure to wiggle all connections while watching scan data/voltage readout to make sure the problem is not a loose or bad connection. A set of feeler gauges. (your meter manual shows these facts) on those cables is 10mm slack. The FSM instructions, are are linked in every section on calibation and does cover this step. NOT start the engine. It will never read zero ohms ever, like real gold contact switches would. 2003 S10 Long Bed 4.3L ZQ8 + 2/3 drop, Caltracs, rear disk conversion, 7" dual diaphragm booster, 255/50/R16 Falken ZE-512, MPFI converted 2114, 48LB Racetronix injectors, eBay RS BOV, Accel 60115 distributor, Aeromotive FPR, Corbeau Forza seats, Mach headers, 2.5" front mount intercooler, Innovative turbo, Precision Industries Vigilante 3,000 RPM torque converter, EFILive COS3 tune. NORMAL. Plug in the scan tool to the ECM. (cut means broken,cut or corroded) stop screw on the throttle body. These simple tests follow below: TheDash Pot must be retracted, when stated. what do you mean? Turn the TPS center shaft and see that the voltages are linear and that they never glitch. See hopeless. Part 1 of 2: Removing the throttle position sensor. Begin tests: Adjustment is not possible. You've adjusted the Throttle Plates using the idle stop. (for sure ,300 to 500 range works ) wires. If this pin fails, for any reason, TV cables (up to 3 cables) not set at10mm play, or TV boreblocked in carbon,these faults must be cleared first or theCalibration steps will all be wrong. Tighten the screw by turning it clockwise. (by people) In the example below we're using the Zenith Stromberg 175CD carbs but the same idea applies to any of the carbs used. The readings should be the same as seen above in the WinALDL testing method. Just give it a try. Unflood mode forever. "Check . These 2 years, are very unique. (not indexed to the body correctly, per the FSM) 16V TPS Calibration method: (FSM steps expanded) See testing here. This is caused by worn carbon on the above rings, end of life. im lost, explain and we can help more. In 1991 GM changed the throttle position sensor connector and there are two styles of EGR solenoid . Check throttle position sensor input voltage. Because the TP sensor may be missing either power or Ground. adjustments dont (factory set) (the bracket does come off easy). car is only sputtering on low rpms. 1. PO= Previous owners, (mostly with no books or tools) (+5 vdcis applied to the TPS pot pin A, from ECU, if not , ECU is bad or this pin A wire is grounded out.. or cut) 4.75 to 5.25vdc is factory spec.. Close the hood of the car. The Throttle must not prevent the TPS from closing, and vis versa. shows cracks , that can happen. pin on the TPS, or you MAYblow upthe 8v ECU copper circuit trace, 16v is better protected. (to avoid this nasty EFFECT) (nor pray tell short this to 12vdc. (the others are for validation steps). TPS switch open, LIMPHOME IS IN EFFECTcar starts, no idle controls, at all , ISC will be dead. Standard Ignition 3 Terminal Connector - S674. It allows air to bypass the throttle plate. I probe pin C ,key Onno start,, and the Dash Pot is holding the throttle open now, (if not fix that now) and the voltage is 0vdc, ( 0.5v) Failure of Idle switch: The TPS mustnever interferewith the TV or the opposite. (Infinity) In this case well be taking voltage readings directly from the connector at the TPS using a Digital Voltage Meter. What you do is: (3 ways to joy? You control the throttle body position with the . There are three pins in the connector, 5V, Ground, and Sensor. end calib. Closed means less than 300 ohms. (hesitations). (ohm meter) Then either find someone with a 95 or older S10 with the TB and ask them to read theirs. (8v example) Sides: shifted into gear). (all makers of this part, have rip off prices, its no Toyota, so they can do that) Side 1, Idle Switch. (, The TPS idle switch is DEAD. The TPS must not prevent the TVfrom closing 100%. Meter to A and B, the same as above but in reverse actions. This is the 89/90 steps for TPS calibration and idle speed, these 2 years are unique. The easiest way to adjust the Throttle Position Sensor (TPS) is to use the shareware program WinALDL.