There are several problems that can develop with the complex ZR-1 throttle body. In this study, the proposed bypass system is. 3 and to unhook the temperature sensor wires (which I did), but it didnt say anything about backing off the idle speed screw. at WOT and 0 lbs. What I am saying is that little idle set screw is hanging out there in thin air. Tuned Port Induction Programming Services can provide you with all your TPI programming needs from a custom Street Rod to a stock Corvette, Camaro, or Trans Am. *the adjustment screw inside the case is a square head bolt. If you're looking for a used one, or live somewhere where Fiero parts are expensive and hard to come by, you might want to ask/look for an IAC for a Chevy 305 or 350 TPI engine. Re-connect the harness connector to the CTPS portion of the (TPS). GM TBI Swap. It may feel as though the car simply doesn't accelerate as it should, and jerks or hesitates as it picks up speed. The ideal Air-Fuel ratio for your engine depends on a lot of factors such as fuel used, engine mechanical setup and the engine operating conditions to name just a few. 5 mm hex heads. They may jump, for example, from 550 to 560 down to 540. If your reading this then like I did you have been searching the web and under the hood of you GMC Jimmy, S10, Astrovan, Or Chevy Blazer trying to f. Adjust your idle mixture quickly and easily with the JDJetting Air Screw without the need to use tools. Our tester, Thomas (who will otherwise remain anonymous), suggests “always testing a car after letting it idle to its full temperature. - done all the basics and even replaced the idle valve - but still the idle is too high - Cheyenne P/U 1989 - 305 small block with TBI injectors. If you're installing your Corvette IAC valve at home, ask an AutoZone expert about our handy Loan-a-Tool program. This means that there is no longer a need for re-jetting or mixing fuel, making this easy-to-shred thoroughbred even simpler to ride and work on. The paradox is the "idle" screw is actually an air screw. I have one question, should the upper bar light up at 1400 RPMs on the DL1K like the TL1K? When checking the adjustment on my bike the middle indicator bar is lit at idle, the upper bar does not show until close to 3500RPMs. TPI Plaque $60. idle fuel/air mixture earlier in the cycle in order to develop maximum cylinder pressure at the proper point after TDC for efficiency, so the vacuum advance unit is activated by the high manifold vacuum, and adds another 15 degrees of spark advance on top of the fixed initial timing setting. Also, as a forward conversation, the complete family of KTM two-strokes is great. com! As a new member we ask that you post an introduction and tell us a bit more about yourself. My BLM's were around [email protected] By opening up the throttle adjustment a bit, both problems went away. I thought it might be a vaccum leak, but I can't see where it would be if that was the case unless it was at the base gasket. Opposite of the carburetor 2 strokes. TPS Voltage adjustments apply to the 1985-89 vehicles only. The benefits of doing the front this way are: No change of springs and no internal fork mods that require draining oil etc. Later model years do not have adjustable TPS's. Click "Download" to get the full free document, or view any other Fiero PDF totally free. KTM and Husqvarna EFI- 250 350 450 500 - SXF XCF XCW EXC and Freeride 350. Mounting the outboard. Is this normal or should I. Setting IAC (Idle air control) valve I saw this video , and wonder about his words of "wisdom. Any other vacumm leaks can cause high or surging idle conditions as well. • Check fuel pressure and record at idle as well as snap throttle. Idle Air Control Tools needed: Torx bit # T-20 Paper Clip Small Punch Take the paper clip and open it up and form it into a big "U" shape. The Sept 2012 issue of Dirt Rider shows you in step-by-step. The world leader in golf fitness, golf health, junior golf development and swing mechanics. Inventory Unit Detail Let's Ride Heyburn, ID (208) 678-3858. If it stays shut then your engine is not going receive air and it won't start. 3) At this point check your IAC counts via a scanner or scan software. Download a copy of a repair manual for your MerCruiser straight to your computer in seconds—fix you engine or sterndrive now. *the adjustment screw inside the case is a square head bolt. Already recognized for its supreme agility, the new KTM 150 XC-W TPI. It's basically a fast idle air inlet. The tools needed for TPS adjustment are an OHM meter, a small flat blade screwdriver and a TORX security screwdriver or socket attachment. When first started hot or cold, the idle speed is OK. 7L) engines. 22LR or 9mm,) threaded 1/2-28 TPI. What I am saying is that little idle set screw is hanging out there in thin air. Valve problems of these type tend to create a more consistent backfire condition. ISA – Idle Speed Actuator. Urothelial bladder cancer begins when normal cells in the bladder turn into abnormal cells and start to grow out of control. It flows more air than the first generation EZ-EFI® throttle body due to an improved inlet, while a new secondary shaft throttle stop adjustment provides even more precise idle airflow adjustment and balance. I once saw a guy who had just swapped out motors and the jetting was way too lean. The idle springs in the governor spring pack position the governor plunger so the idle fuel jet is opened enough to permit passage of fuel to maintain engine idle speed. 9V to the PCM. HANDLEBAR: KTM engineers sure know how to handle handlebars. Idle adjustment is made with the set screw that has yellow paint on it. Maybe a good idea to source a spare now if you intend on purchasing a tpi. 7L v8 L98 tuned port injection engine. I can currently modify the Parameters in the '85 - '89 TPI chips (Fan Temp, Spark Adv. Here is the problem: At idle the engine runs very roughly. Was like they where stuck on part throttle when the clutch was dipped, once I let the clutch out an dabbed the rear brake the revs would cut down to idle speed, would then rev up ok and the next bend same again. There is an idle learn procedure when the dealer puts them on that is done. Opposite of the carburetor 2 strokes. A mechanic diagnosed the problem as the idle air control valve that is screwed to the top of the engine. 5v at the WOT postion. Chevy Small Block Engine Guide: Cams and Valvetrains A problem confronting many engine builders is making the best choice of cam and valvetrain components. Idle Air Control Tools needed: Torx bit # T-20 Paper Clip Small Punch Take the paper clip and open it up and form it into a big "U" shape. >that you can adjust is the fuel pressure on the fuel pres regulator, and it is pre set at the factory. They use the same IAC valve. You can also do an in tank pump The way most new cars come from factory. TPI Merchandise; Support for your association: All items can be purchased from the office. I've seen many of these cars that have had their idle speed "corrected" by well-intentioned mechanics and owners by simply. Below you will find the most complete list of Mercury trouble codes available. KTM 250/300 XC-W TPI INTRODUCTION Combining top performance and outstanding rideability, the new generation of KTM 250 and 300 XC-W TPI machines are distinguished by the lowest weight in their class, intuitive handling and a unique style—along with the awesome READY TO RACE performance. If you had a poor idle. Mounting the outboard. This package makes an huge difference to the 2020 TPI and offers the following gains over a stock bike: much more torque at low/mid revs, where you need it most, with a nice increase in power higher up in the rev range. TPI Torque Specifications. There is a cold start, which opens a bypass supplying more air. 05-17-08 05:23 AM - Post# 1434902 Halo, I'm wondering if there is a procedure to follow to adjust the idle on my TBI unit? The truck seems to idle high. 528 (assuming that's the spec for your machine). • Check fuel pressure and record at idle as well as snap throttle. The one-piece chrome moly tube adds rigidity and durability, and the threaded adjustment feature provides easy cam installation without removing the cylinder heads or rocker boxes. Loosen jam nut, turn screw (requires a Torx style screwdriver) to achieve desired idle, and tighten jam nut. They are sort of an incremental adjustment- adjust one, and the other can drop off a bit- so you need to repeat is several times to get an exact set. 7 Recently the lower radiator hose fell came off the radiator, dumping the liquids all over the street. Basics Of The Throttle Position Sensor (TPS) As you're already aware, the throttle position sensor (TPS) on your 4. the winch really drains the battery and i can only start it so many times till the battery runs down [ with the lights, cooling fan, winch all running]it sounds. Just about ready to fire the 331. Push an open paerclip into the rear end of the connector (leave it plugged into TPS). The industry’s leading aftermarket supercharger! For over twenty-five years, ProCharger offers the most powerful, reliable, and advanced centrifugal supercharger systems and kits on the market. clutch footprint. And there are no runners in the TB that will allow IAC air to enter the TB main openings (blades). For this, read the instructions in the repair manual for your specific vehicle make and model. The MAP sensoris a backup for the mass air flow sensor. I then adjusted it a little higher and it was much better. 3: Exploded view of the model 220 TBI unit-2. What I am saying is that little idle set screw is hanging out there in thin air. Any free play or slop in the linkage at idle in neutral could be the culprit. Watch Out! Here are the Symptoms of a Bad Throttle Position Sensor. Sliding handle fits securely in either end of tool. In 2006 we started offering carburetor parts for fellow enthusiasts, allowing one stop shopping for all their carburetor needs. is reg in tank bad or is my engine the problem. So who's all done idle mod on the TPI. The ideal Air-Fuel ratio for your engine depends on a lot of factors such as fuel used, engine mechanical setup and the engine operating conditions to name just a few. If the cap is still there, use a small punch to knock it out. any idea who it was/. All water make-up piping needs to be drained, if not heat traced and insulated. idle speed” is. There is an idle learn procedure when the dealer puts them on that is done. It uses a silicon wafer that is thinner in the center (0. Cars once utilized a carburetor, which were easy to clean and adjust; however, they dumped gasoline into the engine and sometimes had cold weather drivability issues. 269 results for tpi throttle body Save tpi throttle body to get e-mail alerts and updates on your eBay Feed. Picking up a cam catalog doesn’t necessarily help because of the number of choices. The Idle Air Control (IAC) valve allows the ECU to adjust engine idle speed by letting in a controled amount of air into the engine Categories GM TPI-Style IAC. Air/gasoline adjustment screw: the carburetor pictured in the exploded view uses an air adjustment screw (#5 in illus. Idle speed and off-idle throttle response on the early TPI systems is determined by correct adjustment of the minimum idle speed screw combined with a correct setting of the TPS. The throttle body of the 2018 KTM 250 and 300 EXC TPI engine is made by Dell'Orto and is equipped with an idle adjustment knob. Idle adjustment is made on the socket head cap screw accessible from the backside of the throttle body on the driver side. TPI - Tuned Port Injection TPM - Tire Pressure Monitor TR(s) - Transmission Range (sensor) TSA - Thorax Side Airbag TSB - Technical Service Bulletin TSI - Two Speed Idle TSS - Transmission Speed Sensor TTS - Transmission Temperature Switch (replaced with TOT) TV - Throttle Valve TVR - Turbine Vane Regulator TVS - Thermal Vacuum Switch. 360 (about 5/16 of an inch) long. If you are having rough idling or acceleration and deceleration problems, your TPS may need to be replaced. It idled fine for a few minutes, then pushed. That is exactly what I was told. If I sit long enough and it really warms up, the idle will drop down to about 500 and jump a bit between 480 up to 520. Read more about C4 Fuel Injection Overview at CC Tech. Already recognized for its supreme agility, the new KTM 150 XC-W TPI. 1992 Corvette, LT1, 6 speed, 152k miles. TPI Merchandise; Support for your association: All items can be purchased from the office. Hello everyone, Why does the bike idle change? I rod my bike on the sand dunes and the bike idle changed afterwards! Its RPM decreased and the bike wont start without pulling the cold start chock! It these symptoms of bigger problem?!. What does a Throttle Body Do Open throttle plate. Scan tools that can disable injectors can isolate an injector for diagnostics. If you do not have enough adjustment, you can take any drill bit and enlarge the two screw holes to give you more adjustment. Featuring Ac Delco in stock and ready to ship right now on the internet!. TPS voltage, and base ignition timing. Power is controlled by a throttle valve while intake air data is provided to the engine management system by a throttle position sensor. My suspect is based off the calibration of the TPS sensoryour TPS sensor may have been set a little lower then average which in effort shortens the pulse and fuel. Gas tank is spewing gas out when test is being done. Another highlight of the 300 EXC TPI transmission, is the no-dirt gear. Turn the engine on and let it warm up for about five minutes. but it would restart instantly. 00 not including parts. Help, Polaris 4 wheeler won't idle - posted in General Discussion: i went to plow the driveway got it 2/3rds done and now my wheeler wont idle. > FREE expert answers to automotive questions. How to Change a Serpentine Belt. Custom Idle Air Control Body for use with Jeep 4. KTM and Husqvarna EFI- 250 350 450 500 - SXF XCF XCW EXC and Freeride 350. If GM TPS sensors have any inherent flaws, it is a tendency to slip out of adjustment. Responsive throttle. Connect positive wire of digital volt meter onto paper clip, connect negative wire of volt meter to a good ground. However, as we keep learning with TPI technology, the journey is far from over. It is responsible for regulating the amount of airflow being admitted into the engine to adjust engine speed, particularly at idle and deceleration. I appreciate the info. Fuel sys 3pak, Tbody kit, new EGR valve and solenoid. Try opening up the low speed idle jet 1/4 round for a try and see what happens. Gas tank is spewing gas out when test is being done. Changing the fuel pressure on an EFI System is an effective method of affecting engine performance and making more power. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. At 730rpm, the TPS will read about 0. Whatever your passion or riding style, Victory has a motorcycle for it. ) in that it is located upstream of the throttle valve (slide) and meters air; turning it counter-clockwise leans the mixture off idle. Be patient. The 2018 TPI models start easier, idle more smoothly, and rarely emit any smoke or pungent two-stroke smell. The car starts up great (though with a bit of a fuel smell) and after about 20-30 mins drivng, the idle will drop and the exhaust gets a bit of a fuel smell like it's running rich. It also allows for better flow dynamics and together with new intake snorkels, assists in delivering optimal power and throttle response. With RadiusX, Rekluse has created a high-performing automatic clutch at a mid-range price point for riders on the trail or track. In most cases this is only done if you have modified the internals of your engine or you have swapped a larger throttle bod. Adjusting this cable is the most important step when installing a 700R4, 4L60 or 200-4R transmission. Howell Throttle Body Fuel Injection (TBI) for a Jeep CJ - 258 California Emissions Engine From day one, I have just been dreaming about a day when I could install a Howell fuel injection system on my CJ. Turn ignitian key to allow volts to flow from ECU to the TPS, very carefully adjust tps for a reading of 0. Then, with the engine running, loosen the sensor screws. Step 9 Reinstall the negative terminal, refill the coolant tank to allow for lost coolant and start vehicle. Chopper Hardtail. Use this gauge on GM tuned port injection systems found on most late model (85 and later) Corvette, Camaro, and Firebirds. Large camshafts with extremely low vacuum due to high overlap close to idle. Fuel pressure is good and injectors ohm out is good. Idle lopes (idle RPMs go up and down). Mini TPI Badges $ 8. 1998 unknown 1999 front band 47re - tighten band adj. At WOT, the computer uses the learned adaptive tables from closed loop to kind of guess at the proper air fuel ratio. During operation between idle and maximum speeds,. 5) Some Noid light sets come with two different IAC motor circuit testers which are good to see this same type of signal from the computer to the Idle Air Control motor on a conventional throttle body set up. 22LR or 9mm,) threaded 1/2-28 TPI. Good fuel pump and filters new. Bad and very common. The Sept 2012 issue of Dirt Rider shows you in step-by-step. Intake is a SBC TPI with 36 lb/hr injectors by the way, forgot in first post. Good mid range torque and HP, good idle, moderate performance usage, mild supercharged, computer upgrades required, 8. This causes the vehicle to lose fuel mileage and acceleration. The only adjustment is idle control, and this too is factory set. The gear ratios were carried over from the predecessor, but is now made of a stronger, forged raw material, ensuring the highest durability and reliability level. 360 (about 5/16 of an inch) long. That might do it,if not a carb. Most stock programming I have looked at doesn’t adjust fuel or timing much at all based on IAT sensor readings. From: Sketch. Download a copy of a repair manual for your MerCruiser straight to your computer in seconds—fix you engine or sterndrive now. the EGR might be a cause but the gasket. TPI is today's most efficient fuel delivery system. For all 1979 and up GM carbs. This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette TPI systems. This tapered one, made of high-strength aluminum by NEKEN, features a throttle assembly, which now has a twin-cable for EXC TPI models just like their 4-stroke brothers, with a new double-cable aluminum body and straightforward free-play adjustment. 7L Troubleshooting Tips: When troubleshooting a fuel injected engine, the following items should be checked and confirmed before calling Fuel Injection Specialties for technical assistance. If at all possible, I try to do all required minor repairs to any of our out of warranty vehicles. There is an idle learn procedure when the dealer puts them on that is done. It has had a tough start to life as a press launch bike and then to become one of two TPI models first in competition anywhere in the world when raced at the Erzbergrodeo. >that you can adjust is the fuel pressure on the fuel pres regulator, and it is pre set at the factory. NIMBLE OFFROAD MASTER This nimble, lightweight, extreme terrain master is all new for 2020 and now, proudly features the TPI (transfer port injection) letters next to its name. This is false. 52mm TPI THROTTLE BODIES for 1985-88 and 1989-92 CHEVROLET P/N’s 112-502 and 112-506 The idle adjustment screw is accessible from the back side of the throttle. • This steel thread protector is. The pushrod must spin freely. Typically, adjustment involves connecting a voltmeter with back probe leads to the sensor signal wire and ground. When using a Megasquirt-I, you will need to adjust the idle speed screw to obtain a fast enough idle in cold weather. Advanced Tips for EFI Tuning with Fuel Pressure. 1985-88 VALVE KIT, idle air control 17111288 (no price listed) From: Aaron Smith. 1) You will want to monitor your IAC, Idle Speed, throttle position voltage and your throttle position %. com offers 119 cable tpi products. Inch Spring Adjustable. " If turning the ignition on causes IAC to engage plunger fully forward, then there is no purpose in doing what he is suggesting. It idles extremely rough, and has been stalling. ) Depending upon the Brand/TPI pushrod being used, the procedure is to get the lifter for the valve being adjusted on the base circle of the cam. Poor idle, hard to start and black soot on plugs of a 5. throttle control in idle position and second; it cuts off fuel above maximum rated rpm. Help, Polaris 4 wheeler won't idle - posted in General Discussion: i went to plow the driveway got it 2/3rds done and now my wheeler wont idle. My BLM's were around [email protected] Also, if you were within time and mileage, this wouldn't have cost you a dime. Adjusting this cable is the most important step when installing a 700R4, 4L60 or 200-4R transmission. Is Your Car TPI? Or Carboratored? If It's Carb, Then That's Fairly Simple To Tinker With And Fix Up The Idle, But On The TPI's, The Computer Controls The Idle Of The Vehicle. Volvo 240 Air Intake parts online. Inventory Unit Detail Let's Ride Heyburn, ID (208) 678-3858. Tuned Port Induction Programming Services can provide you with all your TPI programming needs from a custom Street Rod to a stock Corvette, Camaro, or Trans Am. Turn on the ignition, but don't start the engine. Members are required to have at least 4 years of automotive industry experience, ASE certification, or both. Buy OEM & Genuine parts with a Lifetime Warranty, Free Shipping and Unlimited 365 Day Returns. What to look for, clean, check? Any other suggestions. When using a Megasquirt-I, you will need to adjust the idle speed screw to obtain a fast enough idle in cold weather. 0 volts, you should recheck the idle stop screw first. 3 / Printed in Germany by kraus TPI 242 GB-D. The fan shaft bearings and motor base adjusting screws should be lubricated. Adjusting this cable is the most important step when installing a 700R4, 4L60 or 200-4R transmission. Advanced Tips for EFI Tuning with Fuel Pressure. 0 Late Version TPI (Map Sensor) Instructions 60103 / 60203 9. Turn the ignition ON and leave on for several seconds then turn the ignition OFF to allow the ECM to reset the IAC valve. 3) Turn your key to the OFF position. Watch Out! Here are the Symptoms of a Bad Throttle Position Sensor. If you're looking for a used one, or live somewhere where Fiero parts are expensive and hard to come by, you might want to ask/look for an IAC for a Chevy 305 or 350 TPI engine. Was like they where stuck on part throttle when the clutch was dipped, once I let the clutch out an dabbed the rear brake the revs would cut down to idle speed, would then rev up ok and the next bend same again. Start the engine. Open TunerStudio and navigate to 'Basic tables→Spark Advance Table' then click on the down-pointing greed arrow icon, and browse to select YourFile. See specs, photos and pricing on Motorcycles at carlscycle. Upgrading to Gen III LS-Series PCM: Sensors and Inputs Guide includes instructional photos, checklists, and step-by-step instructions on upgrading to the GM Gen III LS-Series PCM, ECM, Electronics, and POWERTRAIN CONTROL SYSTEMS. The new airbox on the KTM 150 EXC TPI has been completely reworked to suit the new throttle body for the TPI system. Engineering specifications: The Mustang Fox body throttle position sensor (TPS) uses a floating ground-return to the computer. Rated #1 Content Marketing Platform. Good fuel pump and filters new. 5 volts and it should smoothly increase to about 5. Poor Mans Repair Guide for Chevy,GMC Vortec Fuel Injector Spider or CSFI System: I hope I can take some of the Dark Voodoo power away from the notorious Vortec injection spider. Additional items not stocked can be ordered as required. How do I fix the idle air control. 9/15hp carbs up to and including 1992 the idle adjustment screw came in from the front of the carb allowing the adjustment to be made from the front of the cowling. The Idle postition switch is different from the sensor, The switch is only used to tell the ECU if the the car is at Idle or not. A little more work with the idle screw, and the engine slowed down to a slightly choppy 1000 RPM. And the IDL to ground voltage should be near 0 volts at idle and close to the battery voltage at anything off of idle. In most cases this is only done if you have modified the internals of your engine or you have swapped a larger throttle bod. This time the engine roared to life and greeted me with a fast idle at about 1800 RPM. It comes from the factory with a protective metal cap over it. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. Featuring Ac Delco in stock now online. There are 39 cable tpi suppliers, mainly located in Asia. Second steady cruise at 60mph for five minutes. In this article, we will show you some possible and common signs of a faulty idle air control valve. This senario tells the ECU that the engine is almost at full load when in fact it is idling. My suspect is based off the calibration of the TPS sensoryour TPS sensor may have been set a little lower then average which in effort shortens the pulse and fuel. I just went through the smog prosess and replaced the tps and the cat. 5v at the WOT postion. It has had a tough start to life as a press launch bike and then to become one of two TPI models first in competition anywhere in the world when raced at the Erzbergrodeo. Very normal for most new KTM bikes. A Corvette idle air control value failure can cause the engine to stall at idle. L-98 Engine Start Sequence. ) Depending upon the Brand/TPI pushrod being used, the procedure is to get the lifter for the valve being adjusted on the base circle of the cam. ISS – Input Shaft Speed. Sliding handle fits securely in either end of tool. someone had the proper way to adjust the idle on 5. Check to see if its getting power. First you have to find the number of threads per inch (tpi) on the adjusters. > FREE expert answers to automotive questions. Needless to say, this can be dangerous. The new airbox on the KTM 150 EXC TPI has been completely reworked to suit the new throttle body for the TPI system. 0 Add on Late TPI Emissions Sections are further divided into Paragraphs and Steps. New Holley 58mm TPI throttle body & high idle. This senario tells the ECU that the engine is almost at full load when in fact it is idling. 3 Start and idle the engine until coolant reaches normal operating temperature. To adjust the TPS voltage loosen the two Philips head screws and twist the sensor either clockwise or counter clockwise depending on if the voltage needs to go up or down. it screws into the front of the manifold and controls the amount of vacuum that goes through a main line using a pintle thats screws in or out. The system starts with a 39mm Dell'Orto throttle body equipped with an idle adjusting. Tuned Port Induction Programming Services can provide you with all your TPI programming needs from a custom Street Rod to a stock Corvette, Camaro, or Trans Am. i changed plugs, cap, rotor, wires replaced steering column, removed spark control module and it ran the same without it. 7L v8 L98 tuned port injection engine. Disconnect power from the ECM for at least 10 seconds to clear codes (in case any are present) and reconnect the IAC electrical connector. The tool is a torx bit end. Or they scanned the vehicle and monitored the IAC (Idle air control motor) steps at base idle. This means that there is no longer a need for re-jetting or mixing fuel, making this easy-to-shred thoroughbred even simpler to ride and work on. Start engine and warm it to operating temperature. One of the more frequent problems with modern vehicles is a bad throttle position sensor (TPS). Its also had a brand new fuel filter and all coil packs checked the only thing left to do is put new injectors in as i have done the same put injector. It may feel as though the car simply doesn't accelerate as it should, and jerks or hesitates as it picks up speed. 1985-1992 TPI 5. If I shut off and stomp gas pedal a few times it will usually idle down. If it stays shut then your engine is not going receive air and it won't start. Re: MAF TPI idle problems 09-27-05 02:04 AM - Post# 781981 In response to LittleNo If you jump terminals A and B on the ALDL connector, turn the key on, wait 30 seconds, unplug the IAC and start the engine, you should have the correct idle if the adjustment screw is in the correct position. My Cousin's V6 '95 Camaro Idles Around 900rpm, But Mine('91 V6) Idles Around 1500rpm. Noticed the timing @ idle according to the scanner is 16 degrees. In the Idle ICF, the "Target Idle Speed (RPM)" must be programmed to the desired RPM speed at hot idle. What's the procedure for setting the gap, guys? I'll be doing it with the compressor on the car don't want to lose my precious R-12. Please note that some specifications are in lb. pull up to stop and shut off. (picture 2 "A") The holes that the screws go through on the TPS are elongated so you can twist the TPS in either direction to adjust it. 190" and the adjustment is in the middle or at about. The TPS sensor is adjusted via the allen head screws on the side of the unit. When you turn it counter clockwise to increase the idle speed you are actually making it leaner. How To Adjust Your Early C4 TPS And Idle Speed How to Adjust your Early C4 TPS and Idle Speed by Lars Grimsrud Colorado Corvette Crazies (CCC) This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette TPI systems. Continue turning low speed screw slowly clockwise until a slight de- crease is noted in engine speed. The paradox is the "idle" screw is actually an air screw. Then, with the engine running, loosen the sensor screws. This means that there is no longer a need for re-jetting or mixing fuel, making this easy-to-shred thoroughbred even simpler to ride and work on. Changing the fuel pressure on an EFI System is an effective method of affecting engine performance and making more power. This nimble, lightweight all-terrain master fears no obstacle and with the advent of TPI technology, has risen to ridiculous new heights. What is your car idling at? Your computer should adjust the idle or are you talking about base idle with the IAC motor off? If your looking for base idle unhook your IAC and there is a screw on the back of your throttle body that you adjust to aprox 550rpm with out the IAC pluged in. it may be the idle air control, My was doin' the same thing for months. Then, up to 30 minutes of driving the idle is fine? I have the throttle assembly off and removed the IAC. Power is controlled by a throttle valve while intake air data is provided to the engine management system by a throttle position sensor. Watch Out! Here are the Symptoms of a Bad Throttle Position Sensor. Ask for this 250 XC-W TPI by stock number 247922 or make and model. If it stays shut then your engine is not going receive air and it won't start. A troublesome spot was the Idle Air Control motors (IAC). The TPI bikes simply feel like a perfectly set-up carbureted bike, no matter what the change in altitude. Kia TPMS Tools - This website provides information for the correct management of Kia TPMS Tire Pressure Monitoring Systems from Bartec USA - We are the market leader for Kia TPMS Sensors for Tire Pressure Systems and for all automobiles in the USA & Canada. we drove it and if you are driving around 55 -80 if you let off the accelerator and put it in neutral the idle stays up, depending the speed 1500 to 3000 rpm. You can also do an in tank pump The way most new cars come from factory. but it would restart instantly. The glue on the elbow near the TBI turned to liquid when the engine got warm. I traditionally adjust high idle simply by ear.