Skip the auto shop - Our mechanics make house calls

Q: Why is my car not starting ?

asked by on

I was driving a couple nights ago. Shut my car to go in a store and when I returned the car would start only when I let off the key. So if I crank for 5 sec or 15 sec, car won't start until I let the key go. Scanned the car and didn't get any codes. Next morning my car wouldn't start at all. Cranks normally, not slow or sluggish but just wouldn't fire up. I tried jump starting, nope. Only cranks. I got compression in all cylinders. 125-130 all across. I got fuel. I hear the fuel pump prime and also checked the hose connecting into the fuel rail. Fuel is being delivered. I don't have spark in any of the cylinders. I didn't have any misfires prior to this issue. I changed the crankshaft position sensor but to no results. I don't know what else it could be and I don't want to keep guessing and checking. German car parts are pricey. Please help and thank you in advance.

My car has 144000 miles.
My car has an automatic transmission.

Hi there. You are correct, parts are expensive, and replacing components without diagnoses can be time consuming without resolution. Circuit tests need to be performed at the ignition coil(s) to determine whether there is power supplied and a signal for coil operation while the engine is turning over. The problem could be, a faulty ignition switch seeing the vehicle start upon release of the key, or a faulty ignition relay not providing power to the ignition coils. No codes stored by the ECM (engine control module) leads me to believe the computer is not recognizing the fault. Proper diagnoses should be performed to avoid unnecessary repairs. I recommend having your vehicle’s no start be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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: Key green light blinking and car dose not start. The car is a Honda fit hybrid.

Hi there. Check the battery cables and see if they are tight and clean. Then check the immobilizer receiver and see if there is any loose wires or broken wires around it. The immobilizer receiver could have went out and...

Q: I had a check engine light and it came out for the same reason of post catalysts fuel from system bank 1 lean is their warranty?

You should contact customer service to find out if you are covered under the warranty policy for the repairs you had done. What will need to happen is the vehicle retested and verify the previous repairs is not the cause...

Q: I put a new battery

When you took the old battery out, the vehicle of course experienced a black-out or power interruption. That may have set a trouble code and it just hasn't yet cleared. As a routine matter, whenever you put a new battery...

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...
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.
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.