Apply a few drops of anti-stick solution to the tip of the replacement throttle sensor and install it in the throttle chamber. 1. no it wont make it not start,it will make it hesitate and loose power but it should still start,one way to find out is disconnect it ,the car should still start with it disconnected,good luck. This is most noticeable when at idle, when on the highway with the cruise control set, or when keeping the throttle steady with your foot. The TPS tells the computer how far the throttle is open. The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture and when extra fuel is needed if the throttle suddenly opens wide. Symptoms of a bad throttle position sensor. Edited by Mark on 1/30/2011 at 12:42 AM EST Here are some common symptoms of a bad or failing throttle position sensor to watch for: 1. A worn-out belt can prevent the Crankshaft-Camshaft Position Sensor from synchronizing, causing the sensor to send the wrong signal. Obviously with false throttle body codes but with throttle body unplugged, that is the only way the vehicle will start. 2. The labor cost can range from $50 to $100 at a workshop. i had a bad throttle position sensor on my car and it still started, didnt idle worth a crap but it started. Expect a total of 100$ to 300$ for replacing the accelerator pedal position sensor. If you have over 4 volts on both wires, then you have a bad tps. When there’s no spark, there’s no starting. If you have experienced some of the other symptoms on this list, it may be due to a bad throttle position sensor.#4 – Inaccurate readings can cause too much fuel to inject into the combustion room because the excess fuel consumption throttle position sensor … 4) Starter Motor. While it is running you can plug it back in and will stay running but it still has almost no throttle response from pedal. 1. Symptoms of a bad tps include rough idling, fuel-rich signs such as fouled spark plugs, black smoke ROM the exhaust, etc. Replacing The Throttle Position Sensor. This sensor is also used to gauge the engine load. … So, based on your voltage tests, your tps is no good, so the first thing you need to do is replace the tps. When you turn on the key the injectors should receive battery voltage. Remove the faulty sensor from the throttle chamber. 4. 3. Can Bad Spark Plugs Cause a Car To Crank But Not Start? Throttle Position Sensor. ... i doubt it! If failure happens, there can automatic transmission shifting problems. The cost differs a lot depending on if you can replace just the position sensor or, like in some car models – you have to replace the whole accelerator pedal, which makes it much more expensive. The anti-stick solution will make it easy for you to remove the TPS in case you need to replace it again. I … If the spark plugs are old, worn, fouled, or damaged, they might not spark. If there are no misfire codes, a common cause of acceleration stumble is a bad throttle position sensor (TPS). ... A failing TPS can cause the engine to search for an idle or surge. If either one of these were to malfunction, then the engine would not be able to start. The job of the Throttle Position sensor is to gauge throttle position- that is controlled by the gas pedal. Still diagnosing the problem but have already replaced throttle body and harness with no success. The PCM uses the trigger signal from the crankshaft position sensor, and/or camshaft position sensor to pulse the injectors. rough or irregular idlying problem. In theory, this could cause a no start, but in actual fact I have never seen this cause a no start. 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