Skip the auto shop - Our mechanics make house calls

Q: My 98 mustang will stall out in 45 seconds consistently and start right back up.

asked by on

My 98 mustang gt will run for around 45 seconds and then stall out. It has no problem starting back up. When I am driving and it is about to stall out I can switch the ignition off and back on real quick and something will reset it and it will continue to run for another 45 seconds, and I can keep doing that for as long as I want. I replaced the fuel module under the left wheel well hoping that was it and it wasnt. Im stumped!!

My car has 139000 miles.
My car has a manual transmission.

It sounds like you may have a fuel supply issue or potentially a faulty idle air control valve. If this happens at lower speeds or at idle, this is typical of a bad idle air control valve. If this happens at higher speeds, this may be related to weak fuel pressure caused by a bad fuel pump, a dirty injector or a bad fuel pressure regulator. I would suggest having a professional from YourMechanic come to your location to diagnose and inspect your car.

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
  • My 98 mustang will stall out in 45 seconds consistently and start right back up.

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: Low idle, sometimes stall, lack of power, putting sound.

Depending on the size of the crack in the manifold, this could potentially cause something like this to happen, however it may also be related to other issues as well. Stalling and lack of power may be also caused by...

Q: Gas tank is leaking

The tank is made of very sturdy stamped steel. It will withstand any conceivable vapor pressure that gasoline will create in a motor vehicle. If the tank is leaking, it leaks because it's rusted out. It's usually a waste of...

Q: My car won't start back up after idling and won't read codes

With the car idling for an extended period, your engine compartment will get extra hot and this may cause the ignition module to fail, resulting in a stalled engine that will not restart. In order to determine whether the ignition...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.