Skip the auto shop - Our mechanics make house calls

Q: It starts, but takes a couple tries. Then if I stomp the gas pedal too hard on take off it will shut off.

asked by on

It starts, but takes a couple tries. Then if I stomp the gas pedal too hard on take off the car will shut off. But if I ease into the gas pedal it will run fine. I suspect a vacuum leak maybe. But I'm not a mechanic, so I'm not sure. I need some advice.

My car has 187000 miles.
My car has an automatic transmission.

A: With your elevated mileage, there are sever...

With your elevated mileage, there are several suspect components: a dirty idle air control valve or throttle body will have poor "transition" behavior, loose hoses or other intake system leaks can cause hesitation and poor low-speed running. Low fuel pressure, or dirty injectors can cause these behaviors as well.

I would recommend having your starting problem diagnosed by a certified technician, like one from YourMechanic, to diagnose this problem, get an accurate assessment of damage, and a cost estimate for repairs. YourMechanic can dispatch a mobile, professional mechanic to your location for this repair.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Throttle body needs to be fixed and I want a estimate Also want to know if the $70 is for inspection only?

Billing question is sent to CS for the cost to repair or replace the throttle body and the cost for an inspection.

Q: I need help with diagnostic trouble codes that suddenly appeared making vehicle almost undriveable.

Firstly, you should have the battery disconnected and the PCM disconnected. Check their connectors for any problems and apply dielectric lube to the connectors so the connection is clean from corrosion. If the problem continues then replace the PCM. All...

Q: My car loses power and blows white steam from exhaust

The symptoms regarding the loss of power and white steam from your Mazda could mean two concerns. The white steam you are experiencing is most likely due to a severe coolant leak. The loss of power is likely associated with...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...