Q: My car won't accelerate although I replaced the throttle body and the accelerator pedal.

asked by on January 18, 2017

A couple of weeks back I got in my car and turned it on as usual, but after a second it turned of. I tried starting the car again and it wouldn't last on. So I began stepping on the gas while I turned the key and I got it to maintain power, but when I put it in drive, the car would not accelerate. I have now replaced the throttle body and the accelerator pedal and even attempted the relearn procedures but they don't seem to work. First the throttle valve closed position does not click how it's supposed to and then when doing the idle volume procedure, the Engine check light won't blink therefore not allowing the car to learn the procedure. I do no know what else to do, I already tried disconnecting both parts and connecting them again then doing the reprogram but still no success.

My car has 158520 miles.
My car has an automatic transmission.

Idle Control Valve Replacement $146.15 - $920.51 Get a Quote

Hi there. Check the Idle Air Control valve (IAC) and see if it’s sticking or not working. The IAC valve controls the engine’s idle and keeps the engine at an optimal operating speed when the throttle is pushed or not. Usually the engine will race up and down when the valve is not working, but sometimes the engine will loose power and stall out. If you need further assistance with your engine idle not working properly, then seek out a professional, such as one from Your Mechanic, to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

I drove thru very high water on the way towork I noticed steam or smoke, coming from under the hood.

The steam that you noticed is due to the water splashing onto the hot exhaust system. The exhaust system components and piping are so hot that any water hitting them will instantly vaporize and create a noticeable cloud of water...

I want to deactivate auto lock with reverse gear.

Hi there. I found a procedure that you may be able to perform on your own. Toyota Camry manuals Toyota Toyota Camry Owners Manual Before driving » Opening, closing and locking the doors and trunk Automatic door locking and...

Where is the vehicle speed sensor located on a 2004 Golf GLS 4 door hatchback 2.0?

The vehicle speed sensor is mounted on the transaxle housing, usually on the differential. It can be very difficult to see and you will probably have to have the car well in the air to get to it. If by...

The car wouldn't crank, check engine light came on, bad crank position sensor

Hello. If this happened right after moving, then the computer may still need to adjust to the new elevation. The computer has an adaptive memory that must adjust to the elevation. If that is not the cause and if you...

Car vibrates and sways back and forth.

There may be a bad component in your suspension that has worn out and is causing the vibration and swaying you're experiencing. There could be various problems at fault here, I recommend having your vehicle examined by a certified mechanic...

my 2004 mitsubishi montero sport cranks but wont start and is leaking coolant

Have the cooling system pressure tested to see where the coolant is leaking out? If timing belt was broken or installed wrong you may have bent the valves in the engine and should do a compression test to see if...

Starts but won't stay running

This may be caused by many different things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen sensor or a dirty or failing idle air control valve. Any of...

P0302 (rear rotor misfire) and CEL not going away

Hey there. Your engine is misfiring but not until your engine is at high RPMs. The cause can be that you are not getting enough fuel or spark to the cylinder. You should have the engine cleaned of carbon, clean...

Engine cranks but won't start. VTM-4 engine light is on. OBD shows codes P0365, P0340 & P0132

You say you turned off the engine as soon as the vehicle was stopped. Does this mean the engine still runs? The VTM-4 light is for the traction control and you may have a problem with the system, which could...

Related articles

Symptoms of a Bad or Failing Coolant Level Sensor
If the Coolant Light stays on permanently, there is low coolant, or the engine is overheating, you may have to replace the coolant level sensor.
Symptoms of a Bad or Failing Speed Timing Sensor
Common signs include the transmission having difficulty shifting, Check Engine Light coming on, vehicle not starting, and loss of engine power.
What Happens to Sensors if They are Dirty?
Car sensors can get dirty with normal use. Symptoms of dirty sensors include reduced engine power, worse gas mileage, or an engine that hesitates.