Yes, and a sure symptom of a bad TPS is rough idle. You might also consider that a dirty/clogged air filter, or dirty/fouled spark plugs will also cause excess fuel use.
TPS Star ended in 2012.
Some vehicles are hard to start in cold weather, sometimes the choke needs to be adjusted or you can have your idle adjusted. Sometimes the fuel filter is dirty and wont allow the gas to flow freely, check that too. In cold weather, the Throttle Position Sensor (TPS) is controlling the idle. Try cleaning the Mass Airflow Sensor by spraying with CRC MAF cleaner which you can get at AutoZone. It comes in a gray spraycan. If that does not work, try looking at all your hoses to see if there is a vacuum leak.
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Try disconnecting the Throttle Position Sensor (TPS). It is located on the throttle body. A small black sending unit with an electrical connection coming out of the top. On my 1998 Lincoln Continental, disconnecting the TPS brought the idle back to normal. Plugging it back in caused the idle to shoot up high again. It is a sending unit that tells other computers in the vehicle the position of the throttle plates. Other calculations of fuel, air, etc. are apparently made based in part on what this sending unit is saying. I guess unplugging it shuts it up. Of course, it will need to be replaced so that it can again begin sending useful information. Update: I changed the TPS (buy it online if you can wait. Its a bit expensive at Ford). The car ran perfectly after about 30 seconds (so the computer could reset probably). To replace the TPS you will need to take a few parts out. First, remove the air cleaner, disconnecting any vent pipes and electrical connections on it, and get it out of the way. You will then see four bolts on the throttle body (the thing with the two butterfly flaps in it). Unscrew the four bolts and take them out. Then very carefully lift the throttle body off of the gasket. You don't have to take it all the way off. In fact, because it is still connected to the throttle cable and all of the other throttle cable related parts, you can at best tilt it up so that you can get access to the two screws that hold in the TPS. Once you tilt the throttle body up, unscrew the two bolts holding the TPS in and take them out. BE VERY CAREFUL. If you drop one of the screws it could go down the intake. That would be a major problem. However, if you carefully remove the screws and set them aside, the TPS comes right off. Put the new one on, making sure it seats correctly and screw the two screws back in. Then reseat the throttle body and put the four bolts back in. Reinstall the air cleaner and you are done. The whole operation can be done in about 20 minutes. Throttle plate may be sticking
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TPS (throttle position Sensor) is a variable potentiometer! Is is connected to the throttle shaft on the throttle body. The ECM/PCM (computer) uses the voltage from the TPS to determine fuel delivery based on the angle of the throttle shaft or valve (driver demand) A loose or broken TPS can cause an unstable idle or intermittent bursts of fuel from the fuel injectors, because the ECM/PCM is fooled into thinking the throttle is moving.
TPS (throttle position Sensor) is a variable potentiometer! Is is connected to the throttle shaft on the throttle body. The ECM/PCM (computer) uses the voltage from the TPS to determine fuel delivery based on the angle of the throttle shaft or valve (driver demand) A loose or broken TPS can cause an unstable idle or intermittent bursts of fuel from the fuel injectors, because the ECM/PCM is fooled into thinking the throttle is moving.
GM. did not start using TPS / THROTTLE POSITION SENSORS until they switch to the fuel injection fuel system. Your truck has a carburetor, TPS was not used on that type of fuel system.
Yes, a faulty throttle position sensor (TPS) can cause RPM creep at idle. If the TPS provides inaccurate readings to the engine control unit (ECU), it may lead to an incorrect air-fuel mixture, causing the engine to run at higher RPMs than intended. This can result in unstable idle and unintended acceleration. Proper diagnostics should be performed to confirm TPS issues and address any underlying causes.
no it will not!
too many people with your proble and guess what fixes it FUEL PUMP. if i read correctly your engine is surging up and down with a TBI engine that normally points to low fuel pressure meaning either fuel filter or pump. replace filter and have fuel pressure tested it shoul be 9-13 psi at idle 9 being on the weak side. Randy
A malfunctioning throttle position sensor (TPS) can cause the engine to stall, but the stalling may not occur at the same RPM every time. Depending on the nature of the TPS fault, the stalling can be triggered at different RPMs due to variations in throttle input, engine load, and other factors. Fluctuations in stalling behavior can also arise from related issues in the fuel or ignition systems.
Check your TPS TPS = throttle position system
It is the code for the TPS Throttle position sensor
Take your vehicle to your local Auto Zone and have the computer diagnozed for trouble codes - there is no charge. I would venture to guess the Throttle Position Sensor (TPS) is faulty and stuck in the closed throttle position which would cause an over-flow of fuel into the piston cylinders, causing the engine to hesitate and wet the spark plugs with excess fuel. - Good luck.
P1120 on my 2000 Tundra V8 meant that the TPS was malfunctioning. The TPS can cause a variety of problems. The TPS is located on the passenger side of the Throttle Body.
Could be a bad TPS> (throttle position sensor) clogged fuel filter, amongst about 583 other things--- Good luck