Skip the auto shop - Our mechanics make house calls

Q: My car starts then stallsafter a few seconds and won't start again

asked by on

this vehicle will start for a few seconds then stall and will not start again. l have changed the IAC, MAF, EGR, Fuel Filter, Battery, Plugs and Coils, and even changed a few vacuum lines. and it still does the same thing. Car will not run long enough to try and pull any codes

My car has 175000 miles.
My car has an automatic transmission.

A: Hello. The steps you have taken at this poi...

Hello. The steps you have taken at this point are all appropriate, and help to eliminate a lot of the electrical components that can cause stalling. You may be looking at a mechanical issue instead of an electrical one. You may want to perform a compression test. This will let you know if the engine is having any mechanical faults not allowing compression cycles to continue.

If this is the issue, the cause of the lack of compression will need to be determined in order to make a repair. Catalytic converters can also clog causing a mechanical failure of the engine. In this situation the first few combustion cycles occurs and the exhaust gas has no where to go. It builds up and chokes out the engine. In this case, the catalytic converter will need to be replaced.

Start by performing the compression test to see if the engine is in good physical condition. Then turn to check the exhaust system.

If you need some help with this, consider YourMechanic, as one of our mobile technicians can come to your location to diagnose your stalling issue firsthand and help you make the necessary repairs. Best of luck.

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: Car won't start due to cracked oil pan

Your car has an aluminum oil pan. They can not be repaired. Driving with an oil leak isn’t safe. Oil can catch fire if it leaks on the exhaust. If you car is cranking, but not starting, there is a...

Q: RPMs jumps at idle, & sometimes stalls when gas applied after a stop at alight or sign and won't restart for a minute or so

Hello. A stalling issue like this may take some time to figure out. If you suspect your fuel tank is dirty, you may want to drop it and inspect it. However, these symptoms are more likely to be related to...

Q: Will a duramax fit in my truck?

This is not a simple swap. There are several things that would have to be modified for this to work. The motor itself is an entirely different motor than the 5.3 Vortec that your truck would have come with and...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...