No spark, how do I check the coil pack?

Tiny
MACCARTHY
  • MEMBER
  • 1999 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • MANUAL
  • 540,000 MILES
I'm getting no spark, I've got new plugs.
Friday, March 17th, 2023 AT 12:50 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,414 POSTS
Hi,

Do you have spark at any of the spark plugs? If you don't, I don't think both coils would have failed at the same time. Chances are it would be a faulty crankshaft position sensor. Take a look through this link and let me know if anything mirrors what you have experienced:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

If you have a live data scan tool, check for an RPM signal when cranking the engine. If there isn't one, the crankshaft position sensor is my first suspect.

As far as testing the coils, you need to test secondary coil resistance. If you look below, I attached the directions and the manufacturer's specifications.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
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Friday, March 17th, 2023 AT 10:50 PM

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