Q: Car cuts off when driving. I replaced the plugs, coil, fuel pump, plug wires, and the gas cap. The light came on for the gas cap.

asked by on

gas cap light comes on replaced gas cap didn't help cuts off when driving replaced wires,plugs,fuelpump,fuel relay,coil,gaspedal,

My car has 78564 miles.
My car has an automatic transmission.

Hi there. Check the fuel pump relay and see if the relay is working. It is possible that the relay could be getting hot or have a loose connection within the relay causing the relay to stop working from time to time. If your vehicle has an inline fuel filter, I recommend replacing the fuel filter for it may be dirty. Check the fuel pressure regulator on the fuel rail and see if its working. Make sure that the regulator harness is hooked up and secured tight. If all of the components are all in serviceable conditions, then check the mass air flow sensor (MAF) and see if its dirty. A dirty MAF may not make the engine light come on, but it will cause the engine to stall out from time to time. If you need further assistance with your engine stalling, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Car cuts off when driving. I replaced the plugs, coil, fuel pump, plug wires, and the gas cap. The light came on for the gas cap.

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: Engine won't start

A faulty Intelligent Battery Sensor (IBS) can result in a no start condition. Inasmuch as IBS on your vehicle is a sensitive electro-mechanical device, it is subject to all the usual faults arising from mechanical stress, vibration, age, and electrical...

Q: Act like it runs out of gas but it doesn't

It sounds like you're having a fuel pressure issue. If you have a fuel pressure gauge, connect it to the shrader valve on the fuel line under hood and check the readings. It should be over 10psi if it has...

Q: Car will not start/no fuel - 1989 Mercedes-Benz 420SEL

If you are certain it is the fuel (i.e. you have confirmed good spark at the plugs), start with power to the fuses (fuel pump), then the fuel pump relay to follow the power path to the fuel pump. It's...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.