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.

A: Hi there. You are correct, parts are expens...

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car randomly shuts off - 2007 Nissan Sentra

Hello. You'll need to start by having the battery load-tested and charging system checked. You may need to clean the battery terminals of any corrosion since this may explain the intermittent no crank with just clicking. Your starter may also...

Q: Engine surging while driving

Hi there. For the engine surging making the rpm's go up and down could be caused by a defective or stuck idle air control valve (IAC). Check the IAC and see if it's working. Remove the vacuum line to the...

Q: Car completely died with all symptoms of bad altenator while it was raining next day starts right up what could that be?

Hello and thank you for writing in. With the multi symptoms that you are experiencing with your vehicle, there are a couple things that are wrong. The first thing is the ignition switch probably failing. All of your power devices...

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...
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...