Skip the auto shop - Our mechanics make house calls

Q: It does not stay on

asked by on

I recently changed out the spark plugs and ignition coils on my wife's nissan and after i put everything back on when i try to start it, it turned on but turned right back off and i even tried giving it gas but that did not work so i double check to see if i missed anything when i put it back together and eveything was where it's supposed to go
My car has an automatic transmission.

If the car starts, even for just a few seconds, this generally means you have spark in most or all of the cylinders. When it fails to stay running, this is typically related to a fuel supply issue such as low fuel pressure, failing or leaking fuel injectors, a faulty MAF sensor or idle air control valve. Fuel injection requires a specific amount of fuel pressure to keep the engine running and when this is too low, this can cause the engine to stall. Faulty fuel injectors can also cause this by either not providing enough fuel or providing too much fuel when leaking causing the motor to flood itself when it is not able to burn all of the fuel in the cylinder. The idle air control valve is a unit that monitors the air intake as it is mixed with fuel prior to being injected into the motor. When this is not working properly, this can cause an imbalance in the air/fuel mixture resulting in too much or too little fuel being supplied to the motor causing it to stall. I would recommend having an expert from YourMechanic come to your location to take a look at your car to properly diagnose and repair.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Vehicle stalling and not accelerating.

The most common problem is the fuel pump is not pumping enough pressure and may need to be replaced with a new filter. The fuel pressure would need to be verified to be lower than specifications by a qualified mechanic....

Q: Shaking

Shaking or vibrating at high speeds is often times related to tires that may be out of balance, low on air, potentially a badly aligned front end, failing suspension components or ball joints. When any of these things are not...

Q: I need some guidance before making a big purchase

Hello - Choosing an aftermarket radio receiver can be tricky; I would consult with Crutchfield. They are automotive sound system experts and have great technical support for questions like this one.

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.