Move the safety pin and positive wire to the 3F connector and repeat the process, checking the increase in voltage. Bucking or misfiring (rich) Pre-conditionals: provided earlier. Turn the throttle down by tightening the TBI's screws. If POT TP wiper pin B or 3(16v) (reads above +3.75vdc ,when trying to start the car, the car will NEVER start. trouble codes thru the check engine light). car is only sputtering on low rpms. TPS idle switch Calibration G16s , J18/J20 engines. If all is good, we can skip the calibration. (my short list, lol) If not get one of the HAYES or CHILTON manuals manuals and do some reading. whats wrong with it? maintain a set idle speed. The 89/90 TBI is a very hard car to adjust, because the Idle adjust screw(stop), changed at ANY time?, wrecks the TPS calibration (Suzuki corrected this pain, in 1991, folly?) So before TheAnglepin only needs to be linear, (foot action to Ohms(volts) It mustnot glitchas you drive. DTC errors, 31, 32 ,33 or 34, or starting in 1996 DTC errors P0101, 102,or 103 (These errors trip failsafe), DIY: crude way, ( super easy, super cheap , fast? BEGIN TESTING the G16A, TBI engine 1991- 1995: (8 valve , engine only) The 3 video tests (mp4) Photo 6: The idle stop screw must never be turned. on the throttle blade or throttle body bore, The throttle stop screw on TPS look here. WOT is about 3.5v or more at the TP pin , and cuts all fuel , cranking (its a feature set on all EFI 1989 to present). the observed IAC position counts come to rest within the spec range I Sides: on the left. Thekey here, is that the wiper pin must NEVER jump open (infinity) as you move the throttle. At idle, its .54 volts, which i think is correct. More 5.2L, 5.9L Dodge Ram Diagnostic Tutorials. POT wiper pin or throttleanglepin : (Cold circuity test), (POT side is never calibrated , only the switch side is calibrated on any of the 1.6L). (Accelerating he/she is?) Set your multimeter to the 10 DC voltage range, place the black negative probe on the ground terminal of the TPS, and place the red positive probe on the reference voltage terminal of the TPS. Then if you open the throttle another 1.28 degrees, the throttle vane is actually open 2.20 degrees but the Motronic reads 1.6 degrees. Throttle Position Sensor 1991 Chevy Silverado Throttle Body Idle issues SILVERADO BLUES MEMBER 1991 CHEVROLET SILVERADO V8 2WD AUTOMATIC 89,900 MILES I just completed an installation of a 400 SBC into my 1991 Silverado C3500. Key off. Select the configuration button. The TPS, is dead because you have a A/T to M/T swaps or the reverse and done wrong, wired wrong or the wrong ECU used, for each. (if this pin fails?, hard, the ECU may go toFailsafe mode, Sets DTC for TPS , if it glitchesNo voltageJumpinessordrop outsallowed! ! Please send photos, relevant images associated to your classic car parts order. Allow the engine to fully warm up and go into closed loop. Throttle Position Sensor problem. Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound. After replacement of Idle Air Control (IAC) valve, system must be cycled as identified for PCM to properly control idle speed. CCW= counter clock wise , CW , guess? We now test the TPSswitch PIN. 6. TheAnglepin is used for fast throttle enrichment detection and to detect cut throttle. Un-flood mode. It may feel as though the car simply doesn't accelerate as it should, and jerks or hesitates as it picks up speed. below is terminal 1 to 3 test for the POT test. Test 1: Pin A, power pin test. The TPS fails to open , at the correct moment the ECU will be very vary unhappy as the idle controls fight your right foot. (the volts must not glitch running or ohms when tested) The 4l60e will not respond to manual shifting like the old non electronic . See photos, at end of this page. Holding it open by hand is no fun with DMM meter in other hand unless you are octopus man. If youve selected the correct COM Port, youll see data scrolling when the key is in the on position and when the engine is running. I have no attachment to the c. This page covers calibration or testing the TPS. JavaScript is disabled. You are done. And either the IAC needs to open up or the throttle blade must be opened Key off: Adjust the TPS by moving it back and forth until the voltage is between 4.0 and 5.5 volts. The TPS is indexed correctly , that is, inside below the TPS are index pins they must be aligned, and for sure not jamming the throttle open. The TPS was not set with the feeler gauge on the threshold of closure. can cause a code to set. It can also be used with the car's ignition turned on but the car NOT running to check other data relative to the TPS. Replace the TBI by placing it back in the engine. The ECU sees VOLTS on this pin, and watches forfast changes to the voltageand never (cept cranking) uses the exact voltage to do anything. have no SWITCH at all now, one just sets the volts and you are done) {0.5v at HOT idle , key on), (Which pin is TP ?. (Walmart) Pull the pin out of the wire on the sensor. FYI: This should force the radiator fans to come on. trouble codes thru the check engine light). ( over 3.5vdc on the TP pin can cause UNFLOOD mode and all injections stop, depends on ECU year and its software) Idle switch OHMS. Doing the calibration is bestdone on th work bench. Do not over tighten the driver like a nut as there are few threads on the throttle shaft and it can be stripped. plug It is located on the left front corner of the TBI body, just ahead of the throttle arm. http://www.s10planet.com/forum/showthread.php?t=608. Loosen the TPS mount screws. The wires related to TPS, were cut/shorted to the ECU or TCM or Cruise controller, or shorted by theAudio/Alarm installer from HELL! Adjust the TPS sensor by reading the ranges of the high and low increases and adjusting the bolt on the top of the sensor until all four readings are in the normal range according to the meter. SFYAUTO CPS Crankshaft Position Sensor 12596851 5S1695 Compatible With GMC Pickup Chevy Silverado Suburban C1500 K1500 K2500 K3500 G30 P30 Cadillac . (if 5vdc is wrong, the TPS will not work. Turn the TPS center shaft and see that the voltages are linear and that they never glitch. The word Pot. If the ECU is infailsafe modedue to a Dead MAF (MPI) or Dead (MAP)sensor, the ECU then uses the TPS tomimic this dead sensor, and now becomes the only (+ RPM) way to measure air flow. See how to fix the folly of finding that the TV valve is not 100% closed and some one messed with that screw above. electrical testing means. Verified Purchase. (A/C fast idle), If not closed this idle switch, at idle the, if set (closed switch) to far into the TPS range, then the car , will have TIP-IN bogging. HACKED OPEN! See calibration for more details. That means it can't calculate the fuel and air ratio. < with good skills you can set it with one feeler(calib). All TB cables are 10mm loose. TPS installation and adjusting the TPS. That would put the main line pressure to maximum. G16A. The TPS on this car is tricky to calibrate (16v). The calibration is only conducted with the SWITCH SIDE. Remove the AWS hose from the inlet pipe to access the TPS sensor on the firewall. The ECM resets the IAC valve when the car is G16A TBI 8valve only device found on TB (throttle body) this device is only vacuum motor (servo) Just a diaphragm and spring inside. Now that youve installed the TPS following the directions posted elsewhere on the site, its time to adjust the TPS for optimal performance using either WinALDL software or a Digital Voltage Meter as shown below. Now the ECU will enter idle mode and activate the ISC system. It may accelerate smoothly, but lack power. The Below internals of my TPS, are cracked, car will never idle. (8v example) (over range, on the meter , means Infinity , and that is what causes, DTC-44 flash code errors, at idle. the vacuum level to drop at idle, which will require the IAC or throttle blade (using 20k meter range) never reads infinity. The 3 video tests (mp4) When they do, they usually freeze up or get stuck in a fixed position. Engines that have higher compression or are new/rebuilt can have higher The throttle plate closes when a car is idling, and to ensure the vehicle continues to run smoothly when it is stopped, the IAC valve continues to inject air. This damage happened during and engine removal. Loosen the throttle position sensor retaining screw with a Phillips-head screwdriver. To adjust the throttle position sensor (TPS) of the Vehicles you must remove the Vehicles and alter its makeup slightly. (minimum air setting). The TPS was calibrated with the DP active. Omg what is a Carb? TPS = Throttle Position Sensor: The TPS is located on the passenger side of the throttle body. NO MPI engine G16B has such a device. As the name states, backprobing is the art of connecting to live circuits, at connectors still connected, past those rubber seals there Go/NoGo and Calibrate sizes. See figure 1 above, for pin Identifications. 5. Rotate the sensor left or right until the voltmeter displays 0.50 volts. Patton Machine offers a large library of product information and support videos in our Installation Support Center. Turn the engine on and let it warm up for about five minutes. 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. The voltage will rise to at least 4v (5.2v max) as you advance the throttle, it must be smooth and linear, with no glitching. allowing unmetered air to enter the engine, The throttle stop screw Angle does change fueling rates (fast acting throttle only) with a fast moving right foot, acceleration beginnings It prevents hesitations. (The Throttleanglepin, allows fast acceleration rich mode power enhancement and causes WOT (wide open throttle mode) and causes Unflood mode at crank time. The throttle position sensor is located on the throttle body. (common on high mileage cars) You control the throttle body position with the . Where To Buy The TPS And Save. All conn. have lever locks, and Suzuki dont sell connectors. (if it cant ever close) or when your stopped at a stoplight and hit the gas a little it sputters for a sec or two the runs smooth. Other car makers do spec. It will never read 0 ohms. A Missing Dashpot on G16a engine. (non 89-91) This works on all TPS sensors, only the pin names vary. The 8v is aTBI, throttle body injectiona.k.a. The TPS was mounted wrong to TB side, and not indexing to the internal tabs , thus jamming the TV at idle and making TPS calibration . (hot to battery Plus or ground) <<< never break this law ! But does in LIMPHOME. (1.8Land bigger motors. Set theDMMvoltmeter to 20VDC range, and connect the minus (black) test lead to the battery, minus lug , for best results. operating temperature and then adjust the throttle stop screw in or out until is 5vdc when not at idle and near 0v when at idle. Basically look inside of it and think about which direction the throttle shaft will need to turn the tps inside components. (This car has no top air horn Idle air bleed screw, is a, TPS testing and calibration, all Sidekicks and Trackers, The only reason this is hard, is the silly carbon cheap Suzuki switch. There is a Torx screw on the side of the throttle body. 2: As you measure the Pot wiper pin, to the other end ground pin, say D or (16v pin 1) the TP pin must vary from below 2k ohms to max what ever you read in line above. This TBI 8valve device (back side of Throttle body) must be retracted someway to do the TPS calibration. as seen below. 300 or less is a better goal as most do near 50 ohms pin 1 to pin 2. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. performed. There are 2 sections in this device, the top section is thePotentiometer (POT) or as some call it a variable resistor. This function has the same parallel to the high speed Accelerator pump device inside many carburettors. If the screw was MONKEYED and you fix that first and off car the throttle cable cant interfere with the calibration. TBI Adapters; Throttle Position Sensor; . And cut fuel mode. (the reading of 4.0K is 4000 ohms.) side called by Suzuki TP pin, is theThrottle anglepin, and allows for the ECU to enrich fuel with a fast right foot. cab 4.3l 5spd 2wd, '07 4.3l out of GMC sierra, centerforce stage II clutch, HURST Sport Truck Shifter, Richmond Powertrax, 3.73, underdrive pulleys, gutted airbox, & one bad azz driver! CCW = counter clockwise. well, one is ground , one is 5v, and TP is low volts) Its the gray wire, with no stripe.). Complete step-by-step testing instructions. tps. Hit the Exit button on the configuration box. Ford tired having no screw and TVs jammed up. Adjust rear TBI throttle stop screw to approx 6" of H2O on manometer. case any are present) and reconnect the IAC electrical connector. Step 2: Disconnect the negative battery cable. For Over 100 Years . 4. (cut means broken,cut or corroded) Engine idle controls dead, the RPM dont hold at. The FSM instructions, are are linked in every section on calibation and does cover this step. The idle switch must be closed and near 0v running or the timing freezeor EGR, ISC will fail to work and DTC 44s happen. 13.01 Buy It Now prevent the throttle blade from closing too far and getting wedged/stuck in the Adjust the idle stop screw Larger displacement engines require more air to 2. Check throttle position sensor input voltage. 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. TheNincompoop section, there areno limits to damageor people doing crazy things to cars, wrong parts, or damaging them. shifted into gear). 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). a switch (right) and the POT. This is only one test out of the series of tests you carry out on the throttle position sensor and we . Same rule, if somenincompoops, fiddledthe TV valve stop screw, all bets off, this folly, must be corrected now. Rotate TPS body CW , see meter go to infinity. Neverhot wireanyECU output pins, or you will damage these simple ECUs . The Howell TBI unit was installed by the PO. (blocking it open). 1. The TV must not bepacked in GUNK causing TV to not fully close. The engine has huge induction air leaks , making the TPS ECU monitor software report false TPS errors. TB =Throttle Body. The throttle stop screws primary function is to The ECU can evenhunt / surge (wild RPM changes)at idle if this PIN C is not working or calibrated wrong. ouch) Never hot wire any output pins on any ECU. (some cars not this, one use real switches and many Technicians, know how those works, and my comment) (<<