Skip the auto shop - Our mechanics make house calls

Q: My Volvo hf7 is cranking but it does not start. What is wrong?

asked by on

Volvo hf7 is cranking but not starting why

My car has 104500 miles.
My car's transmission is unknown to me.

A: Hi there. I see your question is about a V...

Hi there. I see your question is about a Volvo HF7 even when you clicked the Toyota Avalon buttons - I’m will be answering this question as it is associated to the Volvo HF7 vehicle provided.

Check the battery cables for tightness and make sure that the cables are free from corrosion. Then check the three essentials to make an engine operate; check for air flow, spark, and fuel. Look at the air filter and make sure that its clean and there is nothing blocking the air. Check the spark plugs and wires to make sure that there is a strong blue bold spark. Check the fuel injectors to ensure that they are spraying properly. To do this, remove the harness to the injectors and put a test light in the circuit to see if the light flashes. Make sure that all of the connectors have a flashing voltage. Then check resistance on the injectors to make sure that there is no resistance and circuit is open, meaning the injector has not engaged yet. If everything checks out to be good, then check the fuel pressure on the rail and see if there is 35 psi or more. If the pressure is really low then the fuel pump or filter could be clogged or not working. Replace what is not functioning correctly. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you with your engine not starting.

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: Help? - 2003 Honda Civic

This may be related to several different things. It would be best to hook the car up to a scanner to diagnose using the trouble codes that would have registered in the car's computer (you should have a Check Engine...

Q: Loud roar from tires

Hi. This situation requires immediate attention. The symptoms seem to indicate either a tire failure, or brake issue, related to brake caliper/pads, or warped rotor. You can remove the wheel and inspect the tire for bulges or damage, and also...

Q: Loud knock and not truck will not drive when gas pedal is pressed down

This sounds like you broke a driveshaft or the clutch broke causing the transmission to not engage. You should look at the driveshaft to see if it is intact on the transmission and rear end. If you have 4 wheel...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...