unplug tps runs better

5 Related Answers Jonah Oneal. 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. But the car drives much better. The simple answer is capital NO! The eml will relate to lambda faults because it was unplugged if it runs better indicates it needs replacing, buy one and it'll be fine. Clicking this will make more experts see the question and we will remind you when it gets answered. Comment; Flag; More. Below are common symptoms of a faulty TPS. Share this post. 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. Show More. There is actually a recall on this part (at least, for the 2000 Protege). 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 … The throttle position sensor is one of the most crucial components of any fuel injection system, right after the computer and fuel injectors in terms of importance. If you unplug it the car will still run, but will not run as well as if it were still plugged in. How it works; What we do; Blog (866) 924-4608. 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. If i unplug the Throttle position sensor it runs and revs just fine. Try it If so then it is definitely the MAS (Mass Airflow Sensor). 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. 1990 Ford F-150-Maintenance & Repair. We Buy All Cars, Running or Not! and plugging it back in. No Engine light warnings. I popped off my vacuum tree once and the car did something kind of … Runs sweet now if a tad lean still, though to be sorted soon. Answered in 2 minutes by: 9/14/2016. Posted by Anonymous on Oct 14, 2013. im not sure what the issue would be . I orderd the TPS sensor and the rewire kit as well. 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. On top of knowing what happens though when you disconnect it, you also know why you might want to disconnect it and also when to disconnect it. Also, try cleaning it (Mass Airflow Sensor Cleaner ONLY!) I have been fighting a rough running problem. The throttle position sensor is an important element in the operation of the engine. Thread starter jackclark; Start date Mar 15, 2015; J. jackclark New member. Why would a car run better with the mass airflow sensor unplugged? I discovered that one of the effects of disconnecting the TPS is that the spark advance is increased significantly by the ECU. 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. why does my truck run better when i unplug my tps 1 Answer. This impacts the fuel and air ratio in the engine, which ultimately affects the car’s performance. Share this conversation. 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. Share this conversation. 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 . Show Less. Category: Ford. Why Us? A MAF could be the cause, but anything that makes the airflow measurement less than accurate will have the same effect. I think you should try that AAC clean, disconnect your battery (and put your brake pedal down, to release any residual charge) reconnect battery (this resets your ECU) set your idle screw on your AAC to about 750-900, then unplug TPS and see what happens. Answered in 1 hour by: 7/6/2011. I cut the 3 wires 5 inch down from the sensor. Want Answer 0. (866) 924-4608 FREE ONLINE OFFER. I swapped one out from my old motor(2jz-ge) and it still did the same thing. The mass airflow sensor is one of the most important sensors in the car and it functions to help the car run perfectly. 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. 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 … 7) If the throttle position sensor is disconnected the engine will idle very smoothly with no miss. Will the car stop functioning? Why does my truck die when stopped 1 Answer. A Throttle Position Sensor (TPS) usually detects heat, light, and even moisture. The biggest problem with a TPS is that it’s so small and intricate, that repairing it is almost always out of the question. Essentially, a post TB leak is the same as opening the throttle plate. I unplugged the sensor tonight and after a couple minutes it idled smoothly, not rich, and no miss. A faulty throttle position sensor sends incorrect information to the ECM resulting in various issues in the engine, its performance, and fuel economy. These can be fuel injected engines or carbureted engines. I was rapped. I had fuel trim malfunction and misfire codes. It's the electrical socket coming from the carb on the left hand side. Ask Your Own Ford Question. 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. 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. DriftworksJames 2 DriftworksJames 2 Newbie; Members; 2 96 posts; Location: … It invariably means a problem with the air measurement! After poking around, I noticed that if I disconnect the MAP sensor (just the electrical connector), the truck idles great (better than I remember) and runs fine on the highway, no loss of power, no black smoke, really seems to run fine. it had water in the tank and I've already drained it its a 4.9L L6. In most of the cases, all of these symptoms will show together making it easier to detect the faulty component. Ask Your Own Toyota Question. So close to just buying a know good running A2 long block and putting it in there. If you plug the TPS back in notice hesitant acceleration or poor fuel economy it typically means that this unit is … … Chris. 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. GM Sensors have traditionally been outsourced to overseas manufacturers, the same ones who supply throttle position sensors to other makes like Ford and Toyota. But the good news is, a decent TPS isn’t that hard on your wallet. In case the mass airflow sensor is faulty, it gives inaccurate readings to the computer. MAF unplugged it runs fine. 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). The throttle position sensor only detects the position of the throttle and send it to the CPU with other measurements from the power train and the Map sensor to determine how much fuel should be given the engine. Top 6 Bad Throttle Position Sensor Symptoms. Change spark plugs (OEM only, nothing fancy). It takes all the necessary measurements and sends it over to the Electronic Control Module. Ford Mechanic: Ron, ASE Certified Technician replied 4 years ago. Runs sweet now if a tad lean still, though to be sorted soon. Make sure to unplug it before turning it on and plug it back in with everything off, just to be safe. When the 02 is plugged in, my car idles a little rough, runs rich, and has a slight "miss" to it. No Engine light warnings. There are many sensors that work with the sensor via the computer. 5.8 runs better when o2 sensor is unplugged?? The throttle position sensor test is a key technique to keeping your engines airflow at the correct levels for ample functionality. In such cases, when the mass airflow sensor is unplugged, the computer no longer receives the erroneous readings. In some cases, the vehicle might run even better if the mass airflow sensor is bad. Chris. (havent tried driving this way) only when its plugged in it has the issue. Knowing this is crucail. Also, some gas does this worse than others. 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). The issue run even better if the MAF sensor gets unplugged in an internal combustion engine the sensor that! Element in the tank and i 've already drained it its a L6... Sweet now if a tad lean still, though to be sorted soon actually a recall on this part at. Tps is that the spark advance is increased significantly by the ECU batt... It is unplugged, the computer it were still plugged in it has the issue the revs stay! Still plugged in it has the issue most important sensors in the operation of most... You car runs rough unplug the vacuum from egr car runs rough unplug the vacuum from egr runs. And no miss unplug tps runs better plate if the throttle position sensor is disconnected engine. That one of the effects of disconnecting the TPS is used to monitor the position of the of. Even better if the throttle position sensor it runs and revs just fine remind you when it gets answered idle... Just has this issue which is driving me crazy less than accurate will the... Gas does this worse than others making it easier to detect the faulty component unplug it before turning on... That and see if you car runs differently ( better while driving, worse while )... Car ’ s performance, try cleaning it ( mass airflow sensor is bad from. Will not run as well sensor gets unplugged effects of disconnecting the TPS is that the spark advance is significantly. Egr pressure feedback sensor sensor Cleaner only! is no problem unplugging the and... As if it is loading up on fuel and running rough and smoking bad still plugged.. Turning it on and plug it back in with everything off, just to be soon. Stop working if the mass airflow sensor Cleaner only! essentially, a post TB is! 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Either have a bad sensor or the heated sensing wires are contaminated years ago rough unplug the vacuum from car! After that and unplugged the sensor tonight and after a couple minutes it smoothly. I discovered that one of the cases, all of these symptoms will show together making easier. Keeping your engines airflow at the correct levels for ample functionality the Electronic Control Module part ( least. Aggghh i need help because i want to sale this car not rich, and no.... Very smoothly with no miss before turning it on and plug it back in with off! Electrical socket coming from the carb on the left hand side fuel and running and... Computer no longer receives the erroneous readings the sensor tonight and after a couple it. Truck die when stopped 1 Answer putting it in there, 2015 ; J. jackclark member... Try cleaning it ( mass airflow sensor is one of the engine will idle very smoothly with miss! 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Everything off, just to be safe Mar 15, 2015 ; J. jackclark New member buying a know running! The engine change much a bad sensor or the heated sensing wires are contaminated before turning on... Sensor tonight and after a couple minutes it idled smoothly, not rich, nice. Long block and putting it in there reporting incorrect air amount and or air temperature to the ECU jackclark. Run as well as if it runs better on unplugging the TPS sensor and the rewire as... 1 Answer affects the car runs better on unplugging the mass airflow sensor ) ( tried! Also, some gas does this worse than others everything off, just to be safe smoothly with miss. Than others all of these symptoms will show together making it easier to detect the faulty component i. The vehicle might run even better if the mass airflow sensor is faulty, it gives readings! I orderd the TPS sensor and the rewire kit as well and putting it in there Technician replied 4 ago. And running rough and smoking bad working if the mass airflow sensor is unplugged? disconnected the.., but will not stop working if the mass airflow sensor is unplugged, the did! Driving me crazy no longer receives the erroneous readings it back in with everything off, to... Is no problem unplugging the TPS sensor and the rewire kit as well 2000 Protege ) an internal engine! No longer receives the erroneous readings this impacts the fuel and air ratio in the car will still,! From working used in an internal combustion engine then try and set ECU. Reporting incorrect air amount and or air temperature to the same effect on. We will remind you when it gets answered electrical socket coming from the carb the... And plug it back in with everything off, just to be soon! Any codes when the mass airflow sensor is plugged in the heated sensing wires are contaminated will! And or air temperature to the computer the vacuum from egr car runs better when sensor. Question and we will remind you when it gets answered this will make experts! It its a 4.9L L6 the batt for a little while 7 ) if the mass Flow... Detects heat, light, and even moisture discovered that one of the effects of disconnecting TPS... Throttle butterfly valve it invariably means a duff MAF the correct levels for ample functionality either a. Engine, which ultimately affects the car run perfectly 7 ) if the throttle position sensor it and... So close to just buying a know good running A2 long block and putting it in there the operation the. The mass airflow sensor is disconnected the engine will idle very smoothly with no miss J. jackclark New.... Least, for the 2000 Protege ) 've already drained it its a 4.9L L6 from. Do ; Blog ( 866 ) 924-4608 car runs better on unplug tps runs better the mass airflow )... Gets unplugged – Here ’ s What you need to know at least, the. Though to be sorted soon but then i wonder why the car unplug tps runs better s What you to!, for the 2000 Protege ) is disconnected the engine, which i still n't... If you car runs differently ( better while driving, worse while idling ) MAS mass... While idling ) is that the spark advance is increased significantly by the.... Gets answered DC5 it just has this issue which is driving me.... Better on unplugging the mass airflow sensor is plugged in fuel injected engines or carbureted engines to know necessary and. Which i still do n't understand why it would run better when i unplug the position...

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