Cranks but will not start, no spark

2007 TOYOTA COROLLA
219,000 MILES • 1.4L • 4 CYL • FWD • MANUAL
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GENEBOOYSEN
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  • 2 POSTS
Hi all, quite new at this. I am based in south Africa. Do not have much cash so have to fix on my own.

Vehicle cranks but has no spark. Changed petrol pump, checked fuses, charged battery, replaced spark plugs. Checked key and security feature but can't find the problem.

Viewed a video showing how to test a crank sensor with a test light to positive on battery but get nothing.

Is there anything else I can check? Really frustrated as this is what brings in the bread and butter and been at it for three days straight.

Your help Will be appreciated.
Sep 21, 2017 at 1:42 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
It sounds like you have a crankshaft sensor that has gone out which is common. It is difficult to test the sensor while it is in operation with out an oscilloscope. This sensor can also go out without triggering a check engine light.

Here is the way the book calls for though to do a basic test:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

INSPECT CRANKSHAFT POSITION SENSOR

Using an ohmmeter, measure the resistance between the terminals.

Resistance:
At cold: 1,630 to 2,740 ohms

At hot: 2,065 to 3,225 ohms

NOTE: Cold and Hot mean the temperature of the coils themselves. Cold is from -10 °C (14 °F) to 50 °C (122 °F) and Hot is from 50 °C (122 °F) to 100 °C (212 °F) .

HINT: If the resistance is not as specified, replace the crankshaft position sensor.

Here is a guide that will give you an idea of what you are in for when fixing the car.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Here are some diagrams (Below) of what it will be like on your car.

You may need to raise the car safely as well.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
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May 21, 2021 at 5:55 PM
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GENEBOOYSEN
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Thank you Ken. In a bit of a tight spot as I do not have the funds together yet. Discovered that the OCV(oil control valve) separated so needs to be replaced too. I have removed the crank sensor and ordered, Will update as soon as I have replaced.

Your time and knowledge is much appreciated. Have an awesome weekend.
May 21, 2021 at 5:55 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
No problem, you have a good weekend too my friend.
May 21, 2021 at 5:55 PM
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