Skip the auto shop - Our mechanics make house calls

Q: Acceleration problems in 2004 Toyota Solara

asked by on

Hello...My car started having problems when it would loose acceleration then cut of while driving...once stopped, it would crank up and I would be on my way... Well since then I have had the computer replaced. The car will start and stay on , but once you press the gas petal it won't move...glide some but not accelerate. Fuel pump, spark plugs and coil packs have been replaced... No misfire, or knocking. I'm at my wits in....oh yeah the engine light is still on. What else could be wrong???

My car has 200000 miles.
My car has an automatic transmission.

A: Your particular vehicle has an electronic t...

Your particular vehicle has an electronic throttle body that drives by wire, rather than a mechanical cable. The electronic throttle body relies on signals from the accelerator pedal to know how much to open or close the throttle plate. A problem with the accelerator pedal position (APP) sensor, associated wiring, or a faulty throttle body motor could be the culprit. A quick test for this would be to have an assistant press and release the accelerator pedal, with the key on and the engine off, while you listen closely for the sound of the throttle plate moving. If you can't hear it moving then there is a problem with one or more of the above mentioned items.

For your vehicle in particular this is a common problem and it is usually a bad throttle body. I would first check the fuse for the throttle body. It's located in the engine compartment fuse panel, labeled "ETCS" which stands for electronic throttle control system. It's a 10 amp red fuse and will blow out if the throttle body draws too many amps. A high amp draw could be due to a dirty gummed up throttle bore. You can easily clean this with some throttle body cleaner, but be careful and use this sparingly because you could flood out the engine. I would recommend having a certified mechanic come take a look at your car to diagnose this acceleration problem accurately and make the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car keeps stalling. What causes this?

This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...

Q: How do I tilt the moon roof?

The moon roof tilt is controlled by the moon roof switches, which are directly in front of the moon roof, on the ceiling. To tilt the moon roof open, press the TILT button once. To close the tilt, press the...

Q: Car wasjump started wont keep running stalls out

If the vehicle stalls soon after the cables are removed then you most likely have a charging system that is not recharging the battery and needs to be repaired. It may be the alternator. Have a certified technician, like one...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.