Q: Intermittent throttle failure upon ignition

asked by on

On first ignition the car loses throttle on next ignition it gains throttle and so on. It's honda n wgn japan 660cc
My car has an automatic transmission.

This may be related to a couple of different things such as a failing idle air control valve or a failing throttle position sensor. The idle air control valve monitors air intake as it is mixed with fuel prior to being injected into the motor. This information is used to make adjustments to the air/fuel ratio. When this is not working properly, this may cause an imbalanced air/fuel load going into the engine which may cause the condition you describe. To avoid any unnecessary repairs, I would recommend having an expert from YourMechanic come to your home to take a look at your car to properly diagnose and repair your vehicle.

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. Intermittent throttle failure upon ignition

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: My 2010 Mercury Mariner makes a rattling sound when accelerating

The noise you are hearing is most commonly known as pinging or pre-ignition. This can be causes by the mass air flow sensor running the engine lean or if you do not have a flex fuel vehicle then running a...

Q: Throttle body problems

Hello. You need to hold the throttle body open and put the cleaner on a rag and rub inside the throttle body top and bottom where plate contacts and then clean the edges of the throttle plate. If after cleaning...

Q: Have a broken driver side rear main lift support shock, not the two regular left in the right lift supports. Can i replace that?

Hi there. If you are referring to the shock absorbers to the vehicle, then you can fix the brackets that support the shock to the vehicle without having a jack. If you are referring to the air bags that are...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...