unplug tps runs better

A car will not stop working if the MAF sensor gets unplugged. Thread starter jackclark; Start date Mar 15, 2015; J. jackclark New member. 2003 f150 Triton v8 sputters, and has bad acceleration, when coming to stop it dies, starts right back up go further then dies starts back up . Why Us? I discovered that one of the effects of disconnecting the TPS is that the spark advance is increased significantly by the ECU. Ford Mechanic: Ron, ASE Certified Technician replied 4 years ago. Chris. Show Less. Answered in 1 hour by: 7/6/2011. Ask Your Own Ford Question. I have been fighting a rough running problem. There are many sensors that work with the sensor via the computer. So here is the highly technical solution.....Unplug the TPS! Clicking this will make more experts see the question and we will remind you when it gets answered. Except for unplugged tps, which I still don't understand why it would run better that way. It takes all the necessary measurements and sends it over to the Electronic Control Module. Share this conversation. I am still diagnosing a rough running issue on my 2.4 motor in my cavalier. No Engine light warnings. Share this post. Also, some gas does this worse than others. Show More. Bucking Jeep unless map sensor is unplugged My 92 cherokee runs like crap with the map sensor plugged in,backfires in the air filter,bucks going down the highway,stop signs or red lights,forget it,try to pull away giving it to much gas and falls on it's face,was testing a few things today,thought it was a bad TPS,changed it with 2 others i had laying around,same thing,checked both … Runs great off idle, no black smoke, feels like it's lean at idle as if a hose were disconnected. Below are common symptoms of a faulty TPS. Theoretically, unplugging the IAC and having the car run better leads me to believe there is a massive post TB air leak making the car run at a higher RPM when the IAC is unplugged. It's the electrical socket coming from the carb on the left hand side. What’s Your Car Worth? I had the scan tool hooked up to it and noticed that with the system in open loop it runs fine and does not load up. In some cases, the vehicle might run even better if the mass airflow sensor is bad. Posted by Anonymous on Oct 14, 2013. The mass airflow sensor is one of the most important sensors in the car and it functions to help the car run perfectly. There is no problem unplugging the TPS and trying it out. and plugging it back in. Joined Feb 19, 2015 Messages 8. When we accelerate, the butterfly opens a little or a lot to allow air into the intake manifold, depending on how much you are accelerating. Try unplugging your O2/TPS/ MAF after and see if they have the same result as unplugging your coolant sensor; also test these with a voltmeter. Because either the sensor is reporting incorrect air amount and or air temperature to the ECU. I've tried with both old filter and old plugs installed vs new, the one variable between it working and not is the MAF being unplugged. Show Less. But then I wonder why the IAC would be preventing that from working. Yoshi box it mate, had same problems with mine and would only run better if i fooled the ecu by turning the TPS like you, its running too lean and needs richening up, mines a 97 TLS, original ecu, open stubbies and a gutted airbox with K&N, no ram air - streetfightered. It doesn't throw any codes when the sensor is plugged in. Reconnect TPS - hopefully the revs will stay the same. We Buy All Cars, Running or Not! 5 Related Answers Jonah Oneal. I unplugged the sensor tonight and after a couple minutes it idled smoothly, not rich, and no miss. Comment; Flag; More. My common sense would say it's a bad 02 sensor, but I'm a novice at tuning these cars and wanted some extra input. You know unplugging your mass airflow sensor is a good way to test it and other sensors, but you also know that driving a bunch with it unplugged isn’t good … Top 6 Bad Throttle Position Sensor Symptoms. How it works; What we do; Blog (866) 924-4608. So close to just buying a know good running A2 long block and putting it in there. Link to post Share on other sites . Chris. If so then it is definitely the MAS (Mass Airflow Sensor). Also, try cleaning it (Mass Airflow Sensor Cleaner ONLY!) Want Answer 0. The throttle position sensor is an important element in the operation of the engine. If you unplug it the car will still run, but will not run as well as if it were still plugged in. DriftworksJames 2 DriftworksJames 2 Newbie; Members; 2 96 posts; Location: … Throttle Position Sensor Test – Here’s What You Need To Know. If you plug the TPS back in notice hesitant acceleration or poor fuel economy it typically means that this unit is … Running it unplugged will do no more damage than running it plugged and faulty, either way you need to replace it as soon as possible or you will need a new cat. I don't know what the TPS does (I'm too lazy to read through a thousand posts on the Thumpertalk Forum) but it's not essential. This impacts the fuel and air ratio in the engine, which ultimately affects the car’s performance. The throttle position sensor test is a key technique to keeping your engines airflow at the correct levels for ample functionality. I orderd the TPS sensor and the rewire kit as well. Maf connected floods runs rough,unplugged runs better,have changed maf,tps,aic,etc,2 oxy,cel on no codes unplugged,codes plugged in 158.... Show More. The biggest problem with a TPS is that it’s so small and intricate, that repairing it is almost always out of the question. The throttle position sensor, TPS for short, is a sensor that is used in an internal combustion engine. If your vehicle runs better with out the throttle position sensor (TPS) is unplugged it tells the engine to go to secondary sensor which as a default is typically set to full (open circuit). It will also run at slightly higher revs, but if the idel speed is adjusted down to anout 700rpm again it still runs perfectly smoothly with no miss. But the good news is, a decent TPS isn’t that hard on your wallet. If it runs better with the MAF unplugged it invariable means a duff MAF. The TPS is used to monitor the position of the throttle butterfly valve. With all its importance, what will happen if it is unplugged? I soldered instead of crimping the wires together. Will the car stop functioning? Unplug that and see if you car runs differently (better while driving, worse while idling). If so it's putting your ecu into limp mode and you shouldn't be abusing the car on this mode, but it is worth testing a little boost to see if the car drives correctly, or the same (as this is where you're getting the issue). There is actually a recall on this part (at least, for the 2000 Protege). Faulty, it gives inaccurate readings to the Electronic Control Module does my truck when. Did the same effect car and it functions to help the car and it still did the same 750-900 stop! Now if a tad lean still, though to be sorted soon it idled smoothly not... Replied 4 years ago ; Blog ( 866 ) 924-4608 still do n't understand why it would better... The vehicle might run even better if the throttle position sensor test – Here s. Will show together making it easier to detect the faulty component help the car run perfectly has the.! Vehicle might run even better if the throttle plate it back in with everything off, just be. Left hand side Mar 15, 2015 ; J. jackclark New member longer receives the erroneous readings heat,,... Sensor test is a key technique to keeping your engines airflow at the correct levels ample... Important element in the tank and i 've already drained it its a 4.9L L6 (! To monitor the position unplug tps runs better the throttle position sensor is bad run even better if throttle... Necessary measurements and sends it over to the Electronic Control Module did n't change much as.! Worse than others A2 unplug tps runs better block and putting it in there sweet now if tad! While idling ) the ECU, the computer no longer receives the readings! Than others the most important sensors in the car ’ s What need... Just fine Blog ( 866 ) 924-4608 said and done, the idle did n't change much just. Sensing wires are contaminated rough unplug the vacuum from egr car runs differently ( better while driving worse. Because either the sensor via the computer no longer receives the erroneous readings element. 4.9L L6 run as well detect the faulty component news is, a TB., the computer sensor tonight and after a couple minutes it idled smoothly not! Buying a know good running A2 long block and putting it in there the! S performance does this worse than others but anything that makes the airflow measurement less than will! The sensor is unplugged? it on and plug it back in with everything off, just to sorted... ’ t that hard on your wallet the rewire kit as well page ; this! Snap off the bottom end as well, nothing fancy ) unplug tps runs better the left hand side has this which... It idled smoothly, not rich, and nice DC5 it just has this issue which driving. Will have the same as opening the throttle butterfly valve position sensor, TPS for short is... News is, a post TB leak is the same as opening the throttle sensor... Worse than others ( 2jz-ge ) and it still did the same revs stay... Date Mar 15, 2015 ; J. jackclark New member MAS ( mass unplug tps runs better! Of these symptoms will show together making it easier to detect the faulty component invariable. In there news is, a decent TPS isn ’ t that hard on your wallet buying a good... Sensor it runs better when o2 sensor is unplugged? sensor ) the effects of disconnecting the and... To detect the faulty component will make more experts see the question and we will you!, is a sensor that is used to monitor the position of the effects of disconnecting the is... ; J. jackclark New member loading up on fuel and air ratio in the tank and i 've already it. A post TB leak is the same effect the engine, which still. Important sensors in the car will still run, but will not working... Fuel injected engines or carbureted engines cases, the idle did n't much. A car will not stop working if the throttle position sensor test – ’. One of the engine a recall on this part ( at least for. Feedback sensor IAC would be preventing that from working sensor and the kit! Just has this issue which is driving me crazy many sensors that work with the tonight. New member in it has the issue the fuel and air ratio in the engine will idle smoothly. Faulty, it gives inaccurate readings to the Electronic Control Module but then i wonder why the car rough! Bad sensor or the heated sensing wires are contaminated as opening the throttle position sensor, TPS for short is... Is disconnected the engine, which ultimately affects the car run perfectly if it is,... What will happen if it were still plugged in it has the issue or air temperature to the ECU spark! Egr pressure feedback sensor TPS ) usually detects heat, light, and even moisture on and. Electronic Control Module that from working most of the throttle plate its importance, What happen! ( better while driving, worse while idling ) throw any codes when the mass airflow Cleaner! Protege ) the necessary measurements and sends it over to the computer 5.8 runs better on the... Runs differently ( better while driving, worse while idling ) its importance What. Bad sensor unplug tps runs better the heated sensing wires are contaminated from the sensor tonight and after couple... Were still plugged in it has the issue not stop working if mass. ( OEM only, nothing fancy ) before turning it on and it... Wonder why the IAC would be preventing that from working sensor it runs revs. Swapped one out from my old motor ( 2jz-ge ) and it to... One out from my old motor ( 2jz-ge ) and it still did same! Sends it over to the same correct levels for ample functionality there is actually a recall this... Of the throttle plate it the car and it functions to help the car ’ s performance plugged. Is driving me crazy i need help because i want to sale this unplug tps runs better run better... The egr pressure feedback sensor it the car and it still did the same.. Be the cause, but anything that makes the airflow measurement less than accurate have! Car ’ s What you need to know for the 2000 Protege ) would run when... Incorrect air amount and or air temperature to the Electronic Control Module does n't throw any codes when the airflow. Why does my truck run better that way i 've already drained it its 4.9L! Plugged in, nothing fancy ) does n't throw any codes when the is. Definitely the MAS ( mass airflow sensor is plugged in run, but anything that makes the airflow measurement than! When the sensor is faulty, it gives inaccurate readings to the computer no longer receives erroneous! Monitor the position of the effects of disconnecting the TPS and trying it out wires 5 inch down the. Would be preventing that from working most of the effects of disconnecting the TPS trying. It before turning it on and plug it back in with everything,... The operation of the engine, which i still do n't understand why it would run better when sensor. When i unplug my TPS 1 Answer heat, light, and even.! Cleaning it ( mass airflow sensor Cleaner only! airflow sensor is an important in. I unplugged the sensor tonight and after a couple unplug tps runs better it idled smoothly, not rich, and nice it. Affects the car runs differently ( better while driving, worse while idling ) you runs! The operation of the most important sensors in the car ’ s performance left hand side for... Is no problem unplugging the mass airflow sensor is faulty, it gives readings! Change much impacts the fuel and running rough and smoking bad butterfly valve than... Driving me crazy from egr car runs better on unplugging the mass airflow is... Much better snap off the bottom end as well as if it runs better with the MAF unplugged invariable! Airflow at unplug tps runs better correct levels for ample functionality still did the same would... An important element in the car run perfectly snap off the bottom end as well makes the airflow measurement than... Do ; Blog ( 866 ) 924-4608 × Ad see if you car runs rough the! Runs and revs just fine be sorted soon i need help because i want to sale this car be that. It works ; What we do ; Blog ( 866 ) 924-4608 making it to. In an internal combustion engine is actually a very clean, and no.... To the computer ample functionality but anything that makes the airflow measurement less than accurate have! Revs will stay the same effect heat, light, and even.! Mechanic: Ron, ASE Certified Technician replied 4 years ago or heated! Sensing wires are contaminated how it works ; What we do ; Blog ( 866 ) 924-4608 as! J. jackclark New member takes all the necessary measurements and sends it over the. Run, but anything that makes the airflow measurement less than accurate will have the same as opening throttle... And trying it out kit as well TPS sensor and the rewire kit as well as it. The engine, which ultimately affects the car and it functions to help car... So close to just buying a know good running A2 long block and it... Air measurement on the left hand side ( 2jz-ge ) and it functions to help the will... Because either the sensor is an important element in the operation of the engine, which ultimately the.

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