If you have a bad throttle position sensor, your car will not perform well or safely. Driving with a bad throttle position sensor may also cause problems in other related systems in your car, which will mean additional repair bills.

Symptoms of a Bad or Failing Throttle Position Sensor

• 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.
• Check Engine Light comes on, accompanied by any of the above behaviors.

What happens when my throttle position sensor goes bad. When a TPS goes bad, then the car’s throttle body won’t function properly. When the throttle gets stuck in an open position than your vehicle will receive too much air and cause it to have a high or fluctuating idle.

The average cost for throttle position sensor replacement is between $164 and $179. Labor costs are estimated between $54 and $68 while parts are priced at $110. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

No, you need that there so your ECU knows how much fuel to give your motor. They are held on with bolts that dont have any sort of head on them, so what you do, is take a hacksaw or dremel tool and cut a slit in the top of the 2 bolts holding the sensor on, then use a flat head screw driver to take them out.

Here’s How To Replace a Throttle Position Sensor

1. Disconnect the Battery.
2. Unplug Old Sensor.
3. Remove Mounting Screws.
4. Remove Old Sensor.
5. Mount and Screw In New Sensor.
6. Re-Plug Wiring Harness.
7. Reconnect Battery Cables.
8. Q: I Don’t Have Time to Replace My Throttle Position Sensor, Can’t I Just Ignore It?

Diagnostic trouble code (DTC) P2138 stands for “Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation.” It is triggered when the vehicle’s engine control module (ECM) or powertrain control module (PCM) detects that the signals from the two throttle position sensors (or two accelerator pedal position sensors) do …

The most common throttle position sensor code is the P0122 – Throttle Position Sensor/Switch A Circuit Low Input. It’s triggered when the ECU detects that the TPS circuit A is outputting a lower voltage than expected.

The voltage of the throttle position sensor can drop below the expected range for several reasons, including the following: A loosely-mounted throttle position sensor. Electrical short on the sensor circuit, either to the ground or to another wire. Bad or corroded wiring or connections for the sensor.

The P0122 is the generic OBD-II code which indicates that the Engine Control Module (ECM) has seen the TPS sensor circuit A output voltage go below the sensor’s expected range.

What repairs can fix the P2138 code?

1. Replacing the throttle body motor or throttle body assembly.
2. Repairing or replacing wiring that is associated with the throttle body motor.
3. Replacing the throttle position sensor.
4. Repairing or replacing wiring that is associated with the throttle position sensor.

butterfly spindle

A dirty or clogged fuel filter is another reason for a car not accelerating like it’s supposed to when required to do so. With a dirty fuel filter, the engine won’t be getting enough fuel which means that the vehicle won’t be giving the acceleration performance that it should.

When the filter is dirty, it can cause a delay in acceleration and throttle response because when the fuel attempts to pass through a filter that is clogged or dirty, it takes far longer than it would through a clean filter. Staying on top of your fuel filter cleanliness is one way to prevent poor throttle response.

When you press down the accelerator pedal and get minimal output, it could mean you have a problem with your fuel system. The most probable issue is a clogged fuel filter. When your fuel filter is clogged, your fuel pump needs to work harder to get fuel into the system, resulting in a slow insufficient drive.

Seven Signs Your Fuel Pump Is Going Out

• Sputtering Engine. Your fuel pump is telling you something if your engine starts to sputter once you’ve hit the top speed on the highway.
• Overheating Engine.
• Low Fuel Pressure.
• Power Loss.
• Surging Engine.
• Gas Mileage Decrease.
• Dead Engine.

Defective Fuel Pump: The fuel pump pulls the fuel from the gas tank to the engine via the fuel lines. If the pump stops working, malfunctions, or becomes clogged, it will not supply enough fuel to the injectors. This can cause the vehicle to accelerate slowly, or even sputter and stall, especially at high speeds.

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!

The average cost for throttle body replacement is between $548 and $571. Labor costs are estimated between $85 and $107 while parts are priced at $463. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

Can I drive with the throttle control light on? Yes, usually, but you should go straight to a repair shop. There can be many different causes for the throttle control warning light, so a proper diagnosis is key.

Make sure that the accelerator pedal is fully released. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds.

Electronic Throttle Control Indicator This is the Electronic Throttle Control (ETC) Indicator symbol. This light, a lightning bolt between reversed brackets or parenthesis, will illuminate if there is a problem in the electronic throttle control system. As an electronic system, it can sometimes be reset with a restart.

While throttle-body cleaning is good preventative car maintenance, it should also help engine drivability. In fact, if you’ve noticed a rough idle, stumbling initial acceleration or even stalling – all when the engine is fully warmed up – a dirty throttle body could be the culprit.

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).

While there is no set mileage when it comes to the lifespan of the throttle body, it is suggested that you give it a thorough cleaning at about 75,000 miles. Cleaning the throttle body allows your car to operate more smoothly and it helps increase its lifespan.

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.

The check engine light can indicate many issues within a car including a faulty throttle body. Any problem detected with it will turn on the check engine light. As a part of your regular service intervals, include the air induction service and fuel injection flush to clean out any carbon deposits and dirt.

no the TB should not completely closed while on idle. if so, the motor will shut off. Yes but they are arguing that TB should be closed, while all air flows through IAC, which is controlled by ECU. Point at the idle adjust screw, tell them what it does, then hit them with something heavy.

When your throttle body is operating below its normal effectiveness, one of the tell-tale signs is a poor or low idle. This includes stalling after coming to a stop, a low idle after starting, or stalling when the throttle is pressed down rapidly.

You don’t need to remove a throttle body to clean it. If you have a DBW throttle body, DO NOT MOVE THE THROTTLE PLATE MANUALLY TO CLEAN IT, especially with the key in the ON position. Have them depress the gas pedal all the way to open the throttle plate so you can gain access to do your cleaning.

Q: When should I clean the throttle body? A: Ideally, you should perform routine fuel-injection system maintenance and throttle body cleaning every 75,000 miles. This also involves checking the oxygen sensor and catalytic converter for any signs of damage.

WD40 won’t be an effective throttle body cleaner, hard deposits stuck to the throttle body and throttle plate will require a throttle body solvent. Throttle body cleaner is formulated to help breakdown carbon and other fuel related deposits on a throttle body.

Yes, you can use a MAF cleaner on a throttle body, but you cannot use throttle body cleaner on a MAF. If you use the wrong kind of cleaner on the MAF sensor and it leaves a residue, it can burn a little wire if it’s a hot-wire MAF sensor. But on the throttle body, it cleans it perfectly good.

RepairPal.com suggests that a throttle body cleaning costs between $226 and $290. What’s interesting to note is the price of parts: $6 to $12, the low estimate of which is about twice the cost of a can of CRC Throttle Body Cleaner at your average auto parts store.

8 Carburetor & Throttle Body Cleaner Alternatives

• Acarte Carbon Dirt Jet Cleaner. 3 View on Amazon.
• Berryman 0120C B-12 Chemtool. 1 View on Amazon.
• CRC 05678 Air Intake Cleaner.
• Berryman B-12 Chemtool Carburetor/Choke and Cleaner.
• Genuine Toyota Fluid 00289-1TP00 Plate Cleaner.
• Valchoose Premium Jet Cleaning Brushes.

If you plug it in it will die if the car is running. If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die.

Layonnn. CRC MAF cleaner. Its at just about every auto parts store. And yes it is a good idea to disconnect the battery when you clean it.

A contaminated or failed mass air flow sensor cannot measure the amount of air flow correctly. This causes the engine computer to miscalculate the amount of injected fuel. As a result, a bad mass air flow sensor causes various driveability problems, including a no-start, stalling, lack of power and poor acceleration.