Q: Shuts off and won't start for about an hour or so

asked by on

New fuel pump new ECM car shuts off going down the road after driving about 30 minutes will not crank for an hour or so. Sometimes when you shut it off at a store it will not crank for an hour or so after being drove. Not sure what else to check. Any help will be grateful

My car has 202000 miles.
My car has an automatic transmission.

Hi there. From the description you have provided concerning your vehicle’s drivability problem, it hard to discern whether it does not turn over, or it does not start for about an hour after driving. If your vehicle will not turnover (crank), it could be the starter becoming faulty when hot.

If your vehicle will not start, it could be a problem with the new fuel pump installation or the new pump itself. Delphi replacement fuel pumps have recently had high failure rates.

It could be also be any number of electrical components failing with increased temperature (i.e. a fuel pump relay, ECM (engine control module) relay, crankshaft position sensor, etc.)

Assuming, the Check Engine Light is not coming on. This leads me to believe the ECM is not recognizing the fault. If you need more help having this taken care of, I recommend having your vehicle’s starting issue diagnosed in person so that you can get your car safely back on the road.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Shuts off and won't start for about an hour or so

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 have a 2006 Hyundai Azera Limited all the cylinder are misfire would this stop the car from starting up?

Hello, thank you for writing in. The vehicle is not starting because of the issue causing the misfire. If not cylinders are firing when they are being told to, there will be no combustion, and the car will not run....

Q: My car is still running after turning it off.

Hi there. The noise that you are hearing is commonly known as 'Dieseling'. When this happens, check the ignition switch alignment and see that the switch is turned completely off. If the switch is turned off, then while the engine...

Q: Would a 2000 VW Passat 2.0 ECM fit in a 2002 VW Passat v6 3.0?

Hi there. The Engine Control Module (ECM) on a 2.0 engine will fit on the 3.0 engine, however, the ECM may have to be flashed (reprogrammed) to the vehicle you have. If the engine block was swapped out, then the...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.