Q: accelerator pedal throttle sensor

asked by on

Replaced throttle body and still doesn't go 30 miles an hour

My car has 135000 miles.
My car has an automatic transmission.

The vehicle could have a clogged catalytic converter, the fuel filter and/or injectors could be plugged and there are other possibilities in the fuel, ignition, and air induction systems. It is also possible that your vehicle has entered "limp mode" which is set by the PCM if the transmission would be damaged by higher speed operation. The first thing to do is determine if any diagnostic trouble codes have been set and stored by the PCM and their meaning. YourMechanic performs a check engine light diagnostic to retrieve these codes and then uses those codes to track down (i.e., individually test) the failing component. If no codes have set, the engine can be diagnosed on a scope to determine if the issue is confined to one or a couple cylinders or if there is a "global" problem such as you might get with a failing fuel pump or ignition coil or, as noted, a clogged catalytic converter. If you desire that the problem be diagnosed and repaired, please set up a mobile diagnostic with YourMechanic and they will promptly dispatch a certified Mechanic right to your location.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. accelerator pedal throttle sensor

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

Get a quote

What others are asking

Q: Car keeps idling down and shutting off when I drive it.

Hello there and thanks for writing in. Generally belts will squeak when they are loose or not aligned correctly. Occasionally, they may need to have a bit of belt dressing put on them to lubricate them. Your idle issue may...

Q: To change the fuel sending unit does the fuel tank need to be dropped? 2003 Saturn L300

YES, the tank has to be drained and removed to replace the fuel pump and/or fuel level sensor. I recommend a fuel level sender replacement performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to...

Q: Nissan primera p11 won't rev pass 2500 rpm

Hi there. The car sounds like it has gone into limp mode for some reason. I would double check to be sure the MAF is working properly as this will cause this type of reaction as well. Check to see...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...