Quick Answer: What Throttle Position Sensor Does?

What are the symptoms of a bad throttle position sensor?

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!

What happens when you unplug throttle position sensor?

If the TPS is not adjusted correctly as evidenced by a 500rpm idle, and hesitation with initial acceleration, unplugging the TPS connector should then cause a correct idle, and a normal acceleration. Correcting the TPS then produced a correct idle, and no code.

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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.

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 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 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.

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.

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Can a bad TPS 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.

How do you diagnose a bad throttle body?

When a throttle body is not functioning correctly, some noticeable characteristics may be poor or very low idle. This can include stalling when coming to a stop or very low idle after starting, or even stalling if the throttle is quickly pressed (resulting in the throttle body plate opening and closing very quickly).

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.

How do you remove a throttle position sensor?

How to Replace a Throttle Position Sensor Materials Needed. Step 1: Locate the sensor. Step 2: Disconnect the negative battery cable. Step 3: Remove the sensor electrical connector. Step 4: Remove the sensor mounting screws. Step 5: Remove the sensor. Step 1: Install the new sensor. Step 2: Install the sensor mounting screws.

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.

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