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

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: Crank no start - 2003 Dodge Grand Caravan

Hi. Some of the codes you have will cause drivability problems and may cause the van not to start. The code p0118 deals with your coolant temperature sensor and a bad coolant temperature sensor will cause the car not to...

Q: Engine surging and has a loud noise in Sport mode.

Hi there. Check the idle air control valve (IAC) and see if its working. The IAC controls the engines idle and operation. If the engine is surging, then there is a good posability that the IAC valve may not be...

Q: Chech Engine light keeps coming on

Unfortunately there could be a multiple culprits behind why your vehicle would hesitate while accelerating. Due to this and there not quite being enough information, it would be difficult to give you a proper diagnosis here. While it may be...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...