Q: Car loses power and stalls - 2014 Cadillac ATS

asked by on September 03, 2016

My car has gone approximately 34,000 miles. On several ocassions, I experienced the car stalling out. I would start the car and after only a few minutes, there was a significant power loss and inability to accelerate. This happened after the car sat for about an hour or more. I went to the dealership but they weren't able to diagnose the problem as there were no trouble codes present, nor has any warning came up. Do you have any idea what might be the problem?

Car is slow to accelerate Inspection $94.99 - $114.99 Get a Quote

Hi! You may have to leave your vehicle with the dealership in order for them to be able to duplicate the concern. While it is not necessary for there to be diagnostic trouble codes present in the vehicle’s computer in order to troubleshoot an issue, it certainly can help.

A greater diagnostic challenge occurs when the problem is so intermittent that a technician cannot get it to occur during troubleshooting. The more frequently it occurs, the more likely it is to act up while a technician is checking it.

I would speak with the dealership service manager about your concern for your safety while operating this car and how you are losing confidence in its reliability.

If you would like a second opinion, a certified technician from YourMechanic can come to your home or office and inspect your vehicle for the loss of power, and acceleration problems.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Bad battery, lights come up on the dash, won’t start
You may be experiencing an issue with the Electronic Steering Control Lock. This part most commonly causes the vehicle to not start but can also cause some unique electrical issues. It sounds like you have checked the common issues like...
How do I use the Bluetooth HandsFreeLink®?
Some 2012 Accords came equipped with the Bluetooth HandsFreeLink® (HFL) system. If your car has this onboard, it can be used to allow hands free communication through your smartphone and the car’s audio system. You’ll see the buttons on the...
AC blower making clicking noise.
The noise is the blend door actuator for the a/c. The actuator is very common to go bad internally. The actuator will try to move the blend door to a certain position when you turn on or off the vehicle....
Need a diagnosis.
I would ask for help from one of the mechanics at YourMechanic. They have the experience and equipment to diagnose exactly why your vehicle will not start (https://www.yourmechanic.com/services/car-is-not-starting-inspection).
Check Engine Light; Code P1449
Hello. Code P1449 is for the hybrid battery overheating. Honda has issued a TSB 04-028 for this issue. You will have to take your car to the dealer, since the high voltage battery must be accessed for repair. Honda has...
Nissan squeaks a lot on bumpy roads
Usually when you hear squeaks over bumps this is related to a tie rod (https://www.yourmechanic.com/services/tie-rod-end-replacement) or a ball joint (https://www.yourmechanic.com/services/ball-joint-front-replacement) that has been dried out. If your tie rods and ball joints are serviceable, they will have grease fittings on...
Mercedes Benz 190e car does not move when I step on the gas pedal a wire popped it's goes down all the way to the floor
You probably broke a throttle cable. It's just a short cable that goes from the accelerator to a complicated looking linkage on the intake manifold. This isn't a common failure so you may want to look hard at the linkage...
car will not start
If you are sure that fuel is not flowing through the fuel filter that means that the fuel pump is not powered or is not functioning. When you turn the key to the "on" position, you should hear the in...
I have a 2002 Chrysler 300m that had been sitting up for a year. I replaced the rack and pinion but when backing up steering is hard.
Hi there. The issue with the steering being hard seems to be with the pump still having air in it. Start the engine and open the bleed valve slightly. Turn the steering wheel several times from left to right and...

Related articles

P0099 OBD-II Trouble Code: Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic
P0099 P0099 code definition Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic What the P0099 code means P0099 is the OBD-II generic code that indicates that the engine control module (ECM) has detected a fault in the intake air temperature sensor...
P0472 OBD-II Trouble Code: Exhaust Pressure Sensor Low
P0472 code means there is a problem with your electrical circuit, often due to issues with the back pressure sensor.
P2709 OBD-II Trouble Code: Shift Solenoid F Electrical
P2709 means there is a problem with a shift solenoid due to failing transmission components, sensors, or solenoids or other electrical issues.