Skip the auto shop - Our mechanics make house calls

Q: Car stalls when decelerating and/or going over bumps, especially speed bumps.

asked by on

My car intermittently stalls when my foot leaves the accelerator to either slow down or go over speed bumps. Usually at speeds under 15mph, while slowing down. The stall is unrecoverable, it just shuts off. The strange part is it usually will not start again without spraying starter fluid into the intake. Gas is good. Air intake good. I literally have to unhook the intake and spray starter fluid into the throttle body to start it. I can't duplicate the problem by simply slowing down, but I can if I go over a speed bump at 10mph. It also has had trouble starting once or twice in the past month since it got hot out here in south Florida.

My car has 89500 miles.
My car has an automatic transmission.

A: The most common cause of this intermittent ...

The most common cause of this intermittent stalling is due to a few potential problems. The most common faults would be:

  • a wiring fault
  • failing fuel pump
  • an open or short in a sensor

Intermittent issues can be a little harder go diagnose, but a qualified technician such as one from YourMechanic will be able to diagnose this stalling issue and perform any repairs required.

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

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: I removed the left head and the shop found 2 cracks, should I go ahead and replace both heads or just the known bad one?

I would recommend removing the other head and inspecting it for cracks also. I would recommend having the head overhauled, and if needed, replacing it then. If you can get them cheap enough, I would suggest replacing both heads if...

Q: 2008 Hyundai Sonata GLS 4 cyl. 108,000 miles, code P0011 (Cam position, Actuator A-Bank I, Timing over-advance)

Hello, thanks for writing in. I'd be happy to provide my insight. The cam position actuator is an engine component that is responsible for phasing the camshafts and altering the timing. It works using oil pressure, so you are good...

Q: Once my car reaches 60MPH, the steering wheel/vehicle shakes and vibrates intensely.

Tires that "appear" perfectly balanced on a dynamic balancer can still vibrate like crazy on a car if there is significant radial force variation in the tire construction, defective belts, cupping, uneven wear and so forth. If you have moved...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...