Skip the auto shop - Our mechanics make house calls

Q: Car is cranking, but not fully turning.

asked by on

My car was having a hard time starting, it takes few hrs to start then will do the same the next day. I have replaced fuel pump, filter, and strainer, still won't start help pls.

My car has 90000 miles.
My car has a manual transmission.

Hi There, It sounds like you may have a faulty ignition coil. When this happens, this can cause the intermittent type of starting you describe. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly The insulation develops small fractures that open when heated and close when cooled. When open, they allow shorting of coil windings and decrease or eliminate the coil’s ability to function. This type of temperature cycling happens because every time you shut the engine off, the fan stops running, the coolant stops flowing and the temperature under the hood rises. Every time you start the engine again the coolant flows, the fans turn on, and the temperature drops. When this heat dissipates and is absorbed under the hood, it is trapped causing this cycling effect. Components that contain heat sensitive materials include parts like coils, injectors, igniters, and some sensors. Any of these may be potentially subject to this same kind of heat problem which can be very difficult to trace. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: When do the rear wheel bearings need repacking?

The rear wheel bearings on this model year of the Land Cruiser are greased at assembly and permanently sealed. The bearing itself is then pressed into a carrier or "bearing case" which of course is not directly accessible. If a...

Q: Warning lights on in vehicle

The Battery Light is due to a charging malfunction. This could be due to a faulty alternator or a battery that is not holding a charge. The Air Bag Light is a separate issue and will need to be diagnosed...

Q: Hello I'm trying to locate my fuel pump relay on my 1994 Toyota but I'm not finding it. It says it should be behind the glove box

The fuel pump relay is called the circuit opening relay and is under in front of the center console.

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...