FAQ: What Does Throttle Position Sensor Do?

What happens when throttle position sensor is bad?

Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on.

How do you know if your throttle position sensor is bad?

Here are some common symptoms of a bad or failing throttle position sensor to watch for: Car won’t accelerate, lacks power when accelerating, or accelerates itself. Engine won’t idle smoothly, idles too slowly, or stalls. Car accelerates, but won’t exceed a relatively low speed, or shift up.

Can you drive with a bad throttle position sensor?

Depending on the exact nature of your bad throttle position sensor problem, your car could be very difficult to drive, it could get stuck on the side of the road, or it could even accelerate uncontrollably – a very scary and dangerous situation!

How do you test a throttle position sensor?

How to Test TPS With a Volt Ohm Meter Locate the throttle body. Follow the fuel line to the housing mounted over the block of the engine. Identify the power, ground and signal wires on the TPS. Typically the ground is black, the power is red and the signal wire is a different color, blue for example. Check the reference voltage. Check signal voltage.

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How much does it cost to replace a throttle position sensor?

The average replacement cost for the throttle position sensor is anywhere from $110 to $200. The parts cost is anywhere from $75 to $105 while the labor cost is anywhere from $35 to $95. In addition, you will have to account for any extra fees and taxes that get added on as well.

How do you reset throttle position sensor?

The easiest way to reset your throttle position sensor is to unhook the negative cable from your battery for up to five minutes or to remove the fuse for your engine control module.

How long do throttle position sensors last?

The average lifespan of a throttle position sensor is just over 80,000 miles, though some will last for the lifetime of the car. If a TPS is suspect, a professional repair facility will perform electrical testing on the sensor.

What does it mean when your car struggles to accelerate?

Among the causes of poor acceleration are clogged fuel injectors and/or inadequate fuel pressure/volume. This can cause the vehicle to accelerate slowly, or even sputter and stall, especially at high speeds. A clogged fuel filter can also restrict the amount of fuel that reaches the injectors.

When I press the gas pedal it won’t accelerate?

The most common reasons why your car is having trouble accelerating is due to three main categories: Actuator Malfunction – bad spark plugs, faulty fuel pump, damaged fuel injectors, old fuel wiring, and other fuel component issues.

Will a bad throttle position sensor cause transmission problems?

The Throttle Position sensor measures the throttle position, which is controlled by the gas pedal. It is used to determine engine load and if it fails it can cause automatic transmission shifting problems.

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How do you reprogram a throttle position sensor?

Make that the accelerator pedal is completely released or free, then turn “ON” ignition switch and wait for 3 seconds. You want completely depress the accelerator pedal very hard and fully release the accelerator pedal as quickly as possible 5 times within 5 seconds.

How do you fix a low voltage throttle position sensor?

Possible Solutions Carefully check the throttle position sensor ( TPS ), wiring connector, and wiring for breaks, etc. Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If recently replaced the TPS may need to be adjusted.

What should TPS be at idle?

At idle is should be zero or a couple of degrees. Press down on the gas pedal very S-L-O-W-L-Y until the throttle is all the way open. If the TPS has a worn spot, most likely it will be between 0 and 20 percent throttle opening. Try holding the throttle between 0 and 20 percent to see if you get a steady reading.

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