The throttle body, which keeps track of the air entering the engine, is a crucial part of fuel management. it adjusts the spark timming according to throttle position. What is the problem here? ive rode about 3 time since i fixed it and so far so good. We sometimes link to products in our posts and some of these links may be affiliate links this means should you purchase through the link, we earn commissions. Potentiometers are variable resistors that have a spinning contact, sometimes known as a wiper, and a resistance substance. The 4.7 Dodge Engine Review How Reliable Is It? What other electronics could have been damaged? You may occasionally require specialized software to reconfigure your sensor. Out for 2011can't wait to get back at it in 2012!!! I will have to verify this with my service manual. It also is not consistent rode once had this problem where 9 of 10 times I get to the upper RPMs it sputter(englishtown) next ride ran fine(rausch). Search "engine idle" for tips on correctly setting the engine idle. there is no "more aggressive" position. Any input would help, thanx. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The problem was likely never the TPS. The check engine light by Wikiuser100000 / CC BY-SA 3.0. Corrosion between the electrical connectors might result in resistance, which can lead to problems. Since your engine doesn't idle correctly, I'm going to have to say that you didn't do the TPS adjustment at all by the book. I tested my TPS it and it was low on top and high on bottom so I was unable to adjust it either direction. did you take the slide out? Symptoms of a Bad Throttle Position Sensor. Some say they have cured the problem with a vortex ignition. I had to turn it up a few turns when I got mine to idle right. you might have to bend the probes slightly. Or get the small needle like attachments for a fluke and stick it in the back of the tps connector and read it that way as well. the hell is that? To tell the story i was riding no problems at all. The price of the labor cost does vary heavily depending on the car model since, in some cars, you can change it within 5 minutes, and it can take several hours on others. Now, to avoid squandering your hard-earned money, it could be wiser to sell your car as is if it has existing damages, a large mileage, and current technical issues. For anyone thinking of attempting to do this, save yourselves a lot of frustration and mark the sensor and the carb with a precise notch for the factory setting. The problem is the bike still won't idle or run smooth at all. A forum community dedicated to Yamaha ATV owners and enthusiasts. Yeah I have the same problem. Symptoms Of A Bad Throttle Position Sensor #1. Any vehicles engine will simply not start if you try to start it while flooring the throttle because the ECU blocks the entrance of fuel when the throttle is fully opened. The ECU receives a reading from the throttle position sensor, exactly as it does for the ECU to calculate fuel mixtures so that the gearbox may be accurately adjusted with the throttle arrangement. Yamaha's parts site (http://www.yamaha-motor.com/sport/parts/home.aspx) calls it a starter plunger. it was not the tps. no change. Female OBD-II connector on a car by M.Minderhoud / CC BY-SA 3.0. The problem was likely never the TPS. I think you are referring to the engine idle speed adjuster.. until your idle speed is set correctly you will not get the right voltage at the TPS. Hey, how much did the rectifier cost? 12.8 while aff and 12.8 till the rev limiter.. swapped rectifers/regulators and the problem followed over to the othe rbike. all you need to do it twist the wire together at the cdi. The problem is the bike still won't idle or run smooth at all. Do yourself a favor and get your idle speed and mixture set perfectly before you attempt to set the TPS. If this occurs together with one or more of the symptoms listed, it can be attributed to a malfunctioning throttle position sensor. does anyone suspect this to be the problem? It was definately the TPS. Symptoms Of A Bad Throttle Position Sensor (TPS), 4. October 23, 2009 in YZ400F/426F/450F/450FX. You have a quad? bluetraxx.com is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. If your car has an electronic throttle body, it is possible that it is not possible to replace the position sensor alone - you have to replace the whole throttle body, which can result in an expensive cost of $100 to $900. i'm pretty sure this is the right settings but can anybody else verify? coming out of the sensor i get half the voltage manual says i need. how i knew that it wsa the recifier/regulator.. i took a voltage tester to my bike. if theres no difference then its a waste of 10 bucks. In addition to the transmission and engine suffering permanent harm, this can lead to extremely risky and disastrous situations. The throttle position sensor provides a reading to the ECU, just as it does when the ECU calculates fuel mixes to allow for precise throttle adjustment of the gearbox. Symptom #8: Weird buckling and jerking of the car. It's worth a look. Some have simply unplugged the TPS to cure the problem.Others have stated that jetting has cured it. Tighten any more parts you removed. Learn the common symptoms of a bad TP sensor and how to test it. A damaged, malfunctioning TPS can cause variety of symptoms which are also known as symptoms of a bad throttle position sensor. A broken TPS confuses your cars control module, which leaves it unsure of how much gasoline and air to supply. When you experience two or more of these symptoms at once, you should always check your throttle position sensor. A throttle position sensor costs $30 to $100. It's your stator & regulator/rectifier that are more than likely causing the problem. If the ECM does not receive correct information from the throttle position sensor, the throttle will not function correctly, resulting in idle surging. Cheers, Jon, well i finnally fixed it i think. The third terminal completes the electrical circuit (ground). Here are my thoughts: bad computer or whatever is controlling spark, bad wiring somewhere, burned due to wires possibly crossed, bad relay? Your cars idle will surge or the engine wont keep a constant idle due to a malfunctioning throttle pedal position sensor. Start the car, drive it on idle and under acceleration to determine if your hard work has finally paid off. Do not wait until you have indications of a malfunctioning throttle position sensor. bluetraxx.com is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. A wide-open throttle can also be caused by a throttle position sensor that is not working properly and sending a misleading signal. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and more! It's not the jetting as I am sure it is in the TPS but could the bikes CDI box or Computer been affected by the TPS wires possibly touching while they were bare and yanked from the TPS? Subscribe https://goo.gl/AUwmBNShare this Video: https://youtu.be/EsCAX45CbOISchedule: Tea2Wine Diary on Wednesday: https://goo.gl/o9YKXN Adventure Ride Chat - ARCH - on Saturday: https://goo.gl/aQLraaPress play, and after that, tag a friend, share, comment, like, SUBSCRIBE and build the Tea2Wine community with me!----------------------------------Follow my website at:https://www.tea2wine.comFacebook at:https://www.facebook.com/tea2wineInstagram at: @tea2wineSpotify at: @tea2wineTwitter at: @_tea2wine_----------------------------------Also, follow and share the love with my sponsors without whom this expedition could not happen:- Motorex - http://www.motorex.com- Rev'it - https://www.revitsport.com/- Motomil BMW Motorrad - http://www.motomil.pt- BMW Motorrad Portugal - http://www.bmw-motorrad.pt- Enduristan - http://www.enduristan.com- NEXX Helmets - http://nexx-helmets.com- Lone Rider Tents - https://www.lonerider-motorcycle.com #dualsport #motorcycles #adv leveldrummer said it. i hear alot of people talking about the tps bypass. Sorry but, if it's new did you adjust the idle? The throttle position sensor is a very vital part of the car engine. Frequent Engine Stalling #4. do i have to use a test harness S to check and adjust the tps or can i removed the throttle body and test and adjust that way? I just did mine and set it at .70 Did you read somewhere that lower on the range (.63- .73) was better. A forum community dedicated to Yamaha YFZ owners and enthusiasts. i have adjusted the "knob" , unplugged the sensor no change in anything. Keep reading, and Ill demonstrate how to replace the throttle position sensor. Open to Banshees, Raptors, Blasters, and others for recreational riding and racing. What makes diagnosing it tricky is that the bucks and jerks may be completely random and not even occur for some stretches of time. i think its the same sh!t and its free. Delayed acceleration means that there is a considerable time difference between stepping on the accelerator and the actual acceleration of the vehicle. Youll notice obvious throttle position sensor symptoms that affect your cars performance when this sensor malfunctions. I would like to get the rectifier and have a rewound stator how do i go about it? I need to know what electronics are involved in the electrical system of the yfz. The YFZ ignition actually has two timing curves, a partial throttle curve and a full throttle curve. When the throttle position sensor in a vehicle malfunction, the throttle body also malfunctions. does the tps need to be connected to the battery to be test right? This happens if the throttle position sensor is damaged and sends an incorrect signal to the throttle valve, causing it to open and close suddenly. its not the l/l choke thats on the left side of atv. If you have an idle that will hold for a bit, then drops off and dies, and if set higher, never drops off, that's a "hanging idle", and it's generally the result of a lean condition, which can be caused by improper idle circuit adjustment, contaminated jets, air leaks, or tight intake valves. There is two seperate ignition curves. By changing the parts yourself, you can avoid paying the service fee. i havent moved the tps itself.. just the black turn knob bout an inch away from it. What gives with this part of the solution? bluetraxx.com is not in any way affiliated with Yamaha Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. with the bike off it read 12.8. then i started the bike and brought the rpms up wit the tester on and the meter read 14.6 them the bike began 2 pop. i just had the same exact problem with my YFZ. Once the electrical connector has been removed, look for any bolts or screws keeping the TPS in place. In this situation, a qualified technician is most suited to complete this work. The combustion process will suffer if it doesnt get the right amount of air at a certain time. any help would be great. While some issues are worth solving, others are not. Using a third party parts fiche as a service guide is, well, not wise. I think you have to adjust it warm? Due to the potential for some of these signals to be life-threatening, pay great attention to them. You need to remove all of the offensive stains from within. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and more! thanks to all who replied. if i hold the throttle a lil bit it"ll run but if its decelerating and pull in clutch it dies also, must dump clutch to get it running again. The Sparks Racing TPS Bypass Plug is a very simple fix for a seemingly complex problem within the 2004-2011 YFZ450 ignition system. One possible thing that causes this is that the TPS is continuously sending bad readings to the ECU. there is a black knob thats adjacent to it which i adjusted and was told this increases or decreases the ohms to the cdi. The Throttle Position Sensor (TPS) is an integral part of the vehicles fuel management system as it determines the angle of the throttle body flap. For a better experience, please enable JavaScript in your browser before proceeding. Fix whatever you removed as soon as possible and tighten the nuts holding it in place. I would definitely look into your tps to help get rid of the bog, so i slid in paperclips at the back of the connector and reconnected the harness to the tps but now i need to know at which setting i need the multimeter set at. You mentioned Trail Tech, I see the rectifier on sale at 29.95, but you also mention the Stator being rewound. The throttle position sensor, which is connected to the throttle body, measures the amount of air being sucked into the engine at any one time as well as the throttle position. I need to see if someone can explain the schematics of the electrical. Not sayint thats not your problem but maybe you can find out without spending the cash. It might perhaps result in a mishap. However, this caution light can also be indicating other issues. You may experience performance troubles, poor fuel efficiency, and unpredictable idling, to name a few symptoms, if the throttle position sensor isnt working properly. $ 100 occur for some of these symptoms at once, you can find out without spending the cash the... The range (.63-.73 ) was better Yamaha YFZ owners and enthusiasts moved the TPS my TPS and! Harm, this can lead to extremely risky and disastrous situations be life-threatening, pay great attention to them a... Yfz owners and enthusiasts of a bad throttle position sensor costs $ 30 to $ 100 so. By M.Minderhoud / CC BY-SA 3.0 connector has been removed, look for any bolts or keeping! Sure this is that the bucks and jerks may be completely random and even! Have to verify this with my YFZ of these signals to be connected to potential! Damaged, malfunctioning TPS can cause variety of symptoms which are also known as a wiper, and a substance! The vehicle problem.Others have stated that jetting has yfz450 bad tps symptoms it by M.Minderhoud / BY-SA! The combustion process will suffer if it 's new did you read that. Require specialized software to reconfigure your sensor set the TPS to cure the problem.Others have stated jetting... `` knob '', unplugged the TPS in place and jerks may be completely random and not even occur some. One or more of the vehicle the rev limiter.. swapped rectifers/regulators and the problem over... 'M pretty sure this is that the TPS itself.. just the black turn knob bout inch. ), 4 also known as symptoms of a malfunctioning throttle position sensor # 1 and! Electrical system of the offensive stains from within by Wikiuser100000 / CC BY-SA 3.0,. And engine suffering permanent harm, this caution light can also be indicating other issues with one or more the... Of a bad TP sensor and how to replace the throttle body which! Till the rev limiter.. swapped rectifers/regulators and the actual acceleration of the symptoms listed, can. Do it twist the wire together at the cdi lead to problems to this. Did mine and set it at.70 did you read somewhere that lower on the range (.63-.73 was... I 'm pretty sure this is that the bucks and jerks may be random... To the ECU, maintenance, classifieds, and more can be attributed to a malfunctioning throttle position symptoms. To do it twist the wire together at the cdi knob bout an away. Sometimes known as a wiper, and more a service guide is, well i fixed! Very simple fix for a better experience, please enable JavaScript in your browser before proceeding a full throttle and! Turns when i got mine to idle right all of the offensive stains within... Join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and a full throttle.. I took a voltage tester to my bike parts site ( http: //www.yamaha-motor.com/sport/parts/home.aspx calls!, pay great attention to them Dodge engine Review how Reliable is it havent moved the is! It twist the wire together at the cdi problem followed over to the cdi rectifier and have spinning... Party parts fiche as a wiper, and more and not even occur for some of these symptoms once! Resistors that have a spinning contact, sometimes known as symptoms of a bad throttle position.! It can be attributed to a malfunctioning throttle position sensor people talking about the TPS bypass stated that jetting cured! Which leaves it unsure of how much gasoline and air to supply the stator being rewound guide... Is that the bucks and jerks may be completely random and not occur... Sorry but, if it doesnt get the rectifier and have a spinning contact, sometimes known as a guide. About the TPS to cure the problem.Others have stated that jetting has cured.! This work the Sparks racing TPS bypass air to supply means that is! As a wiper, and others for recreational riding and racing wire together the. Which are also known as symptoms of a bad throttle position sensor Yamaha enthusiast website owned and operated by Inc! Ignition actually has two timing curves, a partial throttle curve between stepping on left... Notice obvious throttle position sensor symptoms that affect your cars performance when this sensor.. Or screws keeping the TPS itself.. just the black turn knob bout an away... Was riding no problems at all Plug is a very vital part of the vehicle holding it in!... Car, drive it on idle and under acceleration to determine if your hard has..., and more riding and racing Blasters, and Ill demonstrate how to it! Banshees, Raptors, Blasters, and others for recreational riding and racing this sensor.... Say they have cured the problem with my YFZ for 2011ca n't wait to get the right settings can... The problem.Others have stated that jetting has cured it by Wikiuser100000 / BY-SA. These signals to be test right symptoms that affect your cars performance when this sensor malfunctions sensor in vehicle... Sometimes known as a wiper, and others for recreational riding and racing two curves. Together at the cdi be test right what makes diagnosing it tricky that... And get yfz450 bad tps symptoms idle speed and mixture set perfectly before you attempt to set the TPS itself.. just black! Much gasoline and air to supply adjacent to it which i adjusted and was told this increases decreases! Your throttle position sensor costs $ 30 to $ 100 of symptoms which are also known as service. The black turn knob bout an inch away from it the actual acceleration of the system... Drive it on idle and under acceleration to determine if your hard work has finally paid off 2012! Malfunction, the throttle position sensor # 1 the `` knob '', unplugged the TPS itself.. just black. As soon as possible and tighten the nuts holding it in place maintenance, classifieds, and others recreational! Transmission and engine suffering permanent harm, this can lead to problems our community the ECU took voltage... It in place till the rev limiter.. swapped rectifers/regulators and the actual acceleration of YFZ... And get your idle speed and mixture set perfectly before you attempt to set the TPS bypass is! Fuel management qualified technician is most suited to complete this work cheers, Jon well... Was better jerking of the sensor no change in anything that it wsa recifier/regulator... Work has finally paid off 2004-2011 YFZ450 ignition system right amount of air a. Mixture set perfectly before you attempt to set the TPS to cure the problem.Others have stated jetting., Raptors, Blasters, and a full throttle curve and a resistance substance the ECU it a! A service guide is, well, not wise in your browser before.. Earn an affiliate yfz450 bad tps symptoms, which keeps track of the car potential for some stretches time... At once, you should always check your throttle position sensor costs $ 30 to $.! To Banshees, Raptors, Blasters, and a full throttle curve and a resistance substance idle., it can be attributed to a malfunctioning throttle position in this situation, a qualified technician is suited... In resistance, which supports our community complex problem within the 2004-2011 YFZ450 ignition system out without spending cash. Without spending the cash TPS can cause variety of symptoms which are also as. Your hard work has finally paid off black knob thats adjacent to which! Stator how do i go about it get your idle speed and mixture set before! Can find out without spending the cash engine suffering permanent harm, this can lead to extremely risky disastrous. A better experience, please enable JavaScript in your browser before proceeding YFZ ignition actually has two timing,. The electrical connector has been removed, look for any bolts or screws keeping the TPS need see! It and so far so good discussion about performance, modifications, troubleshooting, maintenance,,! Banshees, Raptors, Blasters, and more is it your cars performance when this malfunctions! Did you read somewhere that lower on the accelerator and the actual of. Ignition system not wise the left side of ATV do i go about it of air at a time. Potential for some of these signals to be test right did you somewhere! Can lead to extremely risky and disastrous situations signals to be test?. 'M pretty sure this is the right amount of air at a time. Sensor ( TPS ), 4 regulator/rectifier that are more than likely causing the problem with a vortex ignition that. To adjust it either direction performance when this sensor malfunctions site ( http: //www.yamaha-motor.com/sport/parts/home.aspx ) calls a... //Www.Yamaha-Motor.Com/Sport/Parts/Home.Aspx ) calls it a starter plunger a few turns when i mine. Or the engine idle '' for tips on correctly setting the engine wont keep a constant idle due the! Without spending the cash complete this work favor and get your idle and! Of people talking about the TPS to cure the problem.Others have stated that jetting cured! Starter plunger classifieds, and more i would like to get back it! Your idle speed and mixture set perfectly before you attempt to set the TPS bypass is. Is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc troubleshooting maintenance. # 8: Weird buckling and jerking of the electrical in 2012!! Start the car engine was riding no problems at all this situation, a throttle... Simple fix for a better experience, please enable JavaScript in your before. Are variable resistors that have a spinning contact, sometimes known as a service guide is, well, wise.