Hopeless:(and solutions) applies to all 1991 to 1998 G16s. I'll post a pic of it later. Again, the 3 throttle cables (up to) must not be tight. Push down on the throttle by hand until it is completely open and check to see if the voltage increases while pushing down on the throttle. It senses the air, heat, and light, and sends the information to the ECM which adjusts the throttle and fuel supply accordingly. This method is used mostly by the hardcore technician. Following on from a couple of previous videos covering the testing of these units. ( I will cover 92-98 1.6L 16valve MPI method here) A GO /NOGO method this is called. neutral (manual trans). TPS was removed, and the internal pins were, The G16a Dashpot fails to ever retract. Where is the "throttle adjusting screw" ? For a better experience, please enable JavaScript in your browser before proceeding. Turn the ignition ON, but do not try to start the engine. So, I took the TPS out of the throttle body, and plugged it into the harness and . If idle speed is not okay after cycling system, problem is usually caused by a dirty throttle plate or vacuum leaks. NO MPI engine G16B has such a device. prevent the throttle blade from closing too far and getting wedged/stuck in the (your meter manual shows these facts) When they do, they usually freeze up or get stuck in a fixed position. This helps your ECU control the fuel and air mixture. 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). When you first open WinALDL, this screen will appear. Adjust the idle stop screw And cut fuel mode. If the TPS goes bad it can make the machine run erratically, or cause a hesitation at certain rpm's. aka, set at threshold of closure. Do not over tighten the driver like a nut as there are few threads on the throttle shaft and it can be stripped. Or bad luck, fate, or ? DMM/DVM: meter set to 20k Ohm range: See Figure 2 above for pin locations. (ground) Key ON. The ECU goes rich, from STOICH mode, and lasts only long enough for the MAP or MAF sensors to catch up. TPS idle switch Calibration G16s , J18/J20 engines. (keyon or off , not started) For sure BENCH setting is super easy, and works best do to , you see carbon blockage at TV/ Bore , and fix that. (we cant burn air), ergo the TPS angle pot was invented. The TPS usually can never causes stalling, the #1 cause of that bad act, is EGR stuck open. There are many failures on the EFI system that can seem like a bad TPS and is not. (and many other functions related to this pin) The throttle position sensor is located on the throttle body. (the ECU does not use this way, but I check it so I can find glitches not found , B to D.) How to use the DMM is here. The easiest way to adjust the Throttle Position Sensor (TPS) is to use the shareware program WinALDL. No need at all for expensive tools to do this very simple calibration. Locate the TPS on the throttle body near the air intake hose. Set meter to 20k scale. 3. In the instructions it says to adjust the tps to .65 volts but it does not say how. A bad idle switch makes calibration , impossible. 2.Misadjusted or bent throttle linkage.You don't know what was done before you got to it. Test the voltage of your TBI using a multimeter. 1.8L DOHC J18 engine (or 2.0L J20) Sport Suzuki TPS calibration on the throttle body. The ECU uses this signal to adjust the fuel injectors and ignition timing. The TPS was calibrated using the wrong feeler gauges, as seen on many store, rag books or on line. They utilize a MAP sensor, coolant sensor, knock sensor, and other TBI controls appropriate for the model year of the engine. Pin D is Cut or the TPS is bad. (7/16 inches). Larger displacement engines require more air to If you have a scan tool, I recommend allowing the engine to warm up to (Imnot sure whichDTC # is which) (all ways) This works on all TPS sensors, only the pin names vary. The Throttle must not prevent the TPS from closing, and vis versa. There is increased load (4vdc on TP pin) all injections cut. TPS Adjustment procedure 2005-2010 XPs: By: commanderjjones aka Jerry _____ TPS = Throttle Position Sensor: The TPS is located on the passenger side of the throttle body. (the reading of 4.0K is 4000 ohms.) With the IAC valve The connectors are held in place with locking tabs, so you'll need to use something like a flathead screwdriver or a small Allen key to release the tabs first. Look close and see cracks. (22 is stuck low) Hit the Exit button on the configuration box. about 50 ohms or near 0volts) OFF means the switch reads, Infinity. *(8 inches HG vacuum dose it) at nipple seen below. To help us guarantee the correct parts for your classic car. loosen the TPS screws until just a tad loose. see? even when your driving and just cruisin like 30 mph . 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. provided earlier. (engine races at idle) Say you look in the throttle bore and the TV is not closed (with dashpot retracted on TBI). after 100k miles many TPS can fail on any car, and depends, on utility, be that, city ,highway or mix, when that happens. Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound. Remove cap from ported tube on rear TBI and connect manometer (J-23951). Test the voltage of your TBI using a multimeter. (Walmart) intake manifold and outside (ambient) air. If the meter does not read 5 volts, the TPS is bad. Wait at least 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. Why? Allow the engine to fully warm up and go into closed loop. 1 Throttle Angle Pot. is adjusted incorrectly (throttle being held open too far; more on this later), There is a problem with Diagnostic manual comes with: Wiring diagram. Doing the calibration is bestdone on th work bench. Click to zoom image. electrical testing means. The TP does get watched by the ECU, for rate of TV action, you move the throttle fast and the ECU sees that and goes toENRICHmode, until the MAF/MAP catches up. FAILURE SYMPTOMS Hesitation, tip in surge, engine pinging, no torque converter lockup. If the screw was MONKEYED and you fix that first and off car the throttle cable cant interfere with the calibration. If you removed the TPS and didnt index the body TPS pins to the TPS actual pin sockets, none of this will work correctly. To be quite honest, you dont really see many IAC valves fail. As noted above, when you have the percentage number correct, the voltage number will also be correct. throttle bore. Tip-in as in your right foot tips in the throttle and engine hesitates a bit. 5. This helps the ECM learn the position of the IAC valve. 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) Move the safety pin and positive wire to the 3F connector and repeat the process, checking the increase in voltage. You can even do so with a scope to see if the TPS glitches, It can be near tested 100% with proper tools. Part 1 of 2: Removing the throttle position sensor. Diagnostic Trouble codes: Any ohm meter works, here, even the $10 Walmart meter, works very well. And either the IAC needs to open up or the throttle blade must be opened Tighten all TPS screws (a double check) and put back its connector. NOT start the engine. TEST 1: Checking The Throttle Position Sensor (TPS) Signal. (or under of 5v is missing) Its a brand new Holley oem style TBI which came with a new tps on it. If you do, the next step will address in the error message. TBI throttle position sensor chevy small block throttle body injected Efurd Garage 7.12K subscribers Subscribe 35 Share 3.2K views 10 months ago One way to change the throttle. Your Equinox's throttle body controls the amount of air that enters the engine. (except 89/90 years) If you have a throttle hesitation problem then do the range test or the POT and ohm meter (resistance meter) test. 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. below is terminal 1 to 3 test for the POT test. The TPS should read between 4.0 and 5.5 volts. throttle body is being used than what originally came with the engine. (all makers of this part, have rip off prices, its no Toyota, so they can do that) This will allow you attach the leads of your Volt Meter to the various pins for testing. 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. The screw is set with very tough loc-tite. You will see a menu with multiple different settings, and you need to focus on the Accel pumps (20f, 65f, 170f) and Fast Accel (20f, 65f, 170f). This function has the same parallel to the high speed Accelerator pump device inside many carburettors. Start the engine to test the TBI. Turn the throttle down by tightening the TBI's screws. You will not get perfect zero volts, just very close. it needs calibration or error 1 ,2,3 corrected above) The calibration is only conducted with the SWITCH SIDE. this car runs like a rape date-will burn first and second easy and its an automatic. 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). Holding it open by hand is no fun with DMM meter in other hand unless you are octopus man. This tests can find a bad throttle angle sensor portion. unbolt that nut below (stud) and remove the DP for calibration. Photo 5, do not attempt to do this. Anything over 80% is acceptable and in this example its 92.9% as you can see in both the Dash and Sensor Data display. This occurs because the ISC idle servo action was not canceled, at throttle tip-in. They supply the complete wiring necessary to operate the engine fuel system and spark control as originally designed. Then, start the car and try to rev it up to approximately 3,000 RPM. TB =Throttle Body. FYI: CW = clock wise. If You cant get zero volts (or near) the throttle is blocked open by something or the TPS calibration is way off, or the TPS is bad, at Calibration proves this out later 1986-1982 2.5L (R) 151" 17068996, 17078274 TBI 14050 Skyhawk 1982 1.8L (G) 110" 17067587, 17068612, 17078516 R-2 CARB 14053 amount of vacuum an engine can generate at idle. You are cruising and you tip-in the throttle moreand it hesitates, then catches up! This is a bad TPS TP signal. Install the air cleaner duct and tighten with the Phillips screwdriver. I am hoping to get some advice about an issue I had with my Cruze earlier today. The TBI engine G16Adash pot devicemust be retracted first ! (the volts must not glitch running or ohms when tested) Tbi using a multimeter the instructions it says to adjust the TPS usually can never causes stalling, 3! Open by hand is no fun with DMM meter in other hand you. 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