Skip the auto shop - Our mechanics make house calls

Q: Key won't turn over, 2009 Pontiac G8

asked by on

I went out to my car this morning, and it wouldn’t start. I turned the key, and it turns over but nothing else. I took a guess that it’s the fuel pump, and so I replaced that. But my car still won't start. Do you have any ideas of what I should look at? What else could it be?

An engine that cranks but doesn’t start is lacking one or more of the following: compression, fuel, or spark. You need to check for each of the following to determine the cause. You can check fuel pressure using a dedicated gauge at the fuel rail. Proper injector control can be checked using a noid light inserted into the harness side of the injector connector. Spark can be checked using an inline spark tester and compression can be checked using a compression and or leak down gauge. I recommend that you have a trained professional diagnose the starting issue for you firsthand. The team at YourMechanic is an excellent option since we make house calls and can save you a tow bill.

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: No heat?

You most likely have low coolant in the system and need to purge the air out of the cooling system. Have the cooling system checked and purged of air then test the heater again.

Q: The engine stopped working suddenly

BMW has a TSB (technical service bulletin) on this. A faulty oil level sensor can cause this, as the power to this sensor is shared with the transmission range selection switch. If the transmission range selection switch loses power, the...

Q: Does the engine need to be lifted forward in order to replace the oil pan gasket?

Hi there, thanks for writing in. The oil pan is clear to be removed without lifting the motor. The original pan gasket is riveted to the pan. The new gasket does not need to be riveted on to pan for...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.