is adjusted incorrectly (throttle resting closed too much), There is a mechanical This occurs because the ISC idle servo action was not canceled, at throttle tip-in. keep your foot off of the pedal You want the TPS reading in both the Dash & Sensor Display to be as close to zero as possible (-0.3 in this example). (engine races at idle) Say you look in the throttle bore and the TV is not closed (with dashpot retracted on TBI). The 16v uses software for a Dashpot function. You need to back off the driver set screw 1/2 of a turn to set them properly. Adjust rear TBI throttle stop screw to approx 6" of H2O on manometer. If the throttle position sensor fails, your ECU doesn't know how much air is passing through the valve. Begin the calibration. : can cause a code to set. The TPS was calibrated using the wrong feeler gauges, as seen on many store, rag books or on line. side called by Suzuki TP pin, is theThrottle anglepin, and allows for the ECU to enrich fuel with a fast right foot. or potentiometer, or variable resistor. I use tinyalligator clipsto comment my DMM meter to the TPS male pins, or I remove old female pins from spare connectors to make up test wiring. TEST 1: Checking The Throttle Position Sensor (TPS) Signal. Turn the throttle down by tightening the TBI's screws. Not at all. Connect volt meter just like above atsetup1. Measure output voltage of Throttle Sensor using voltmeter. Any voltmeter can work here, even a $10 one. It is not the device that determines, fuel rates (flow) at idle, cruise or WOT ! on second gens they can be adjusted let me find the thread. any cars TPS could be made to be adjusted, but on 2nd gens its not necessary, i got an 88 gmc jimmy 4.3l i just put on a new tps how to i check the volts someone got a step by step to what to do to set it right. (gotsymptoms?) The cables must never be tight and holding the Throttle valve open (TV) at all. Easy to install to replace 20 year old components. Tips for adding power to a throttle body injected (TBI) Chevy 305, 350, or 454 V-8 engine. CASE 3: The multimeter DID NOT register any voltage. Location. (timing jumps during static timing procedures?) trouble codes thru the check engine light). (not indexed to the body correctly, per the FSM) All TB cables are 10mm loose. Verify that the throttle valve is closed. Glitching= This means that the voltage or resistance is not linear at the TP pin (throttle angle) seen here as glitching open . 16V TPS Calibration method: (FSM steps expanded) See testing here. Remove grounding of the Insert a safety pin into the 3G connector on the voltmeter, sliding it between the rubber seal and the electric wire. 3. Loosen the jam nut and unscrew the throttle stop screw all the way so that the throttle blade closes fully against the throttle body itself. For Over 100 Years . (varies by maker of DMM) : any of 3 throttle cables set tight, TV,cruise and A/T kick down cables (set wrong) The spec. An electronics guy, calls this the wiper pin, that is because it wipes the carbon, as it moves and picks off a new resistance, as it moves. Go, & NoGo feeler gauge chart: Suzuki in black ( withoddGM deviances) USA FACTS ! Infinity resistance ohm, is open = ( meterDMMdisplaying O.R, over range, or O.L, over load,see your metersoperational manual, some show over range in different ways) (if the ECU sees this , it can SET DTC errors for IDLE Switch failure,when in fact is just calibation errors), 1991 to 1995 , 8V TBI G16a TPS Calibrationof TPSidle switchside: C and D. The 3 video tests (mp4). The 16v TPS has no pig tail connector like 8v has, but has 4 pins, and pin 1 is on the bottom. Never touch this screw below, the feeler is the Calibration tool . Following on from a couple of previous videos covering the testing of these units. You've adjusted the Throttle Plates using the idle stop. The IAC works by bypassing the closed throttle plate, the valve allows air to circulate inside the car's combustion area and allows the vehicle to idle smoothly. IT GOT HIT ! Those values are perfectly fine for the TPS. As you turn the throttle up or down. Your Equinox's throttle body controls the amount of air that enters the engine. M/T = Manual transmission, A/T , yes, automatic (this is all ASE /SAE jargon. Look close and see cracks. (auto ranged meters, works ok too) 4. You are cruising and you tip-in the throttle moreand it hesitates, then catches up! This is a bad TPS TP signal. even when your driving and just cruisin like 30 mph . The TPS is now calibrated and validated. (TBI G16A) Shut the engine off and locate the AWS hose in the back of the carburetor attached to the curved inlet pipe near the throttle arm. Causing DTC errors like mad. It tells the ECU how far open the butterfly in the throttle body is. How do you adjust the volts for the tps? The throttle body can be differently priced depending on different vehicles, models, and the manufacturing company. Zero=zero opens the throttle vane 1.92 degrees when the lefthand stop screw is adjusted from 10 mV to 250 mV, however, the Motronic only reads 0.32 or 0.64 degrees. All pins on allMPI TPS look like this and rules and wire colors ! The FSM instructions, are are linked in every section on calibation and does cover this step. PinB(TP pin) below, the voltage will very, for near 0v to near 5v, as the throttle is advanced. Previous owner removed it and put it back and now its not calibrated or did the calibration guessing or with wrong feeler gauges? neutral (manual trans). If the ECU shows Idle switch bad (DTC) that is usually, just not calibrated caused. In the USA the TBI engines were banned in 1996 by EPA and C.A.R.B. (89-95 years) All steps here: If not unplug it and check it with the TB closed. (use the 8v rules for these test above) (<<