Skip the auto shop - Our mechanics make house calls

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.

A: Hi there. From the description you have pro...

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?

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・Save up to 30%

Get a quote

What others are asking

Q: My car doesn't turn on, got new battery, changed oil and spark wires and plugs, but when and if it turns on it goes and stalls out

Hello there, many faults will cause your 2001 Honda Accord to have the P0420 code and not turn on. The P0420 code indicates the vehicle has catalyst system efficacy below threshold. This is indicating the car is detecting the cars...

Q: My truck will not start at all!

Hi there. It looks as if you had a lot of work done in a very short period of time. This might have led to a minor mistake that could have prematurely drained your battery. In some cases, the battery...

Q: 02 Mitsubishi galant 2.4 L shut off at a stop sign wouldn't start again, fuel pump wasn't turning on

Hi and thanks for contacting Your Mechanic. If the issue you are having is still fuel related, meaning that you have checked the spark plugs and air filter for spark an air, then there could be a plugged fuel filter...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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.