No spark

Tiny
PULLINHAIROUT
  • MEMBER
  • 1990 TOYOTA 4RUNNER
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have no spark from coil or spark plugs.
Monday, June 3rd, 2019 AT 1:43 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi Pullinhairout,

When you replaced the coil, did that come with the igniter? As you can see from the description below, the igniter is responsible for interrupting the current to the primary coil which delivers your voltage spike for the secondary coil to deliver the high current spark to the plugs.

The other thing you will see in the diagram, is the pick up coil. In other words this is the crankshaft sensor. If you have no crank signal then there is a chance that the pick up has failed. As the starter turns the engine the crank signal is delivered to the ECU and if the ECU is not receiving it then it will not send the signal to deliver the spark.

If you have a crank signal and the coil and igniter are good, then most likely your ECU is the issue.

Let me know if you need more information and we can go from there. Thanks
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Monday, June 3rd, 2019 AT 6:41 PM
Tiny
PULLINHAIROUT
  • MEMBER
  • 2 POSTS
Thanks guys. It is all I have for wheels to get back and forth to work.I just can't figure it out!
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Tuesday, June 4th, 2019 AT 10:28 AM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Does what I said make sense? Let me know if you need me to clarify or expand on something. If everything checks out that I mentioned, we can dig deeper. Thanks
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Tuesday, June 4th, 2019 AT 7:37 PM

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