Skip the auto shop - Our mechanics make house calls

Q: it idles high when started and dogs out when u press the accelerator. .

asked by on

What would make my car idle high and dog out when i hit the gas ?

My car has 136000 miles.
My car has an automatic transmission.

Hi there. Typically a high idle issue is caused by the idle control valve or a vacuum leak. When you apply pressure to the throttle and it bogs down, that tends to also be a vacuum issue. Some of the components you might want to have inspected by a professional mechanic include the idle control valve, EGR valve or the throttle body itself. A good idea would be to have one of our professional mechanics complete an engine is idling high inspection; so they can pinpoint the source of your Mercury’s engine issues.

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!
  • Home
  • Questions
  • it idles high when started and dogs out when u press the accelerator. .

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 car runs poorly when the idle sensor is connected, without it the car runs fine

The throttle position sensor is designed to monitor the position of the throttle butterfly valve in relation to the throttle pedal position. If the engine runs rough when it is plugged in and runs fine when it is unplugged, then...

Q: Gm I need a power steering pump or should I get power steering fluid? I have leaks coming out what should I do

If the power steering pump is leaking then you should replace the pump since it is under pressure and no stop leak will stop it from leaking.

Q: Over heating

There are a few possible causes for an engine to overheat. A low coolant level, failed cooling fan, faulty water pump, or clogged radiator can all cause the engine to overheat. The situation that you have described makes me first...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.