Cranks but will not start

Hi,

I attached a couple pics from the schematic. Pic 1 shows the coils and wiring. Pic shows how the wires go to the ECM.

Since you have power and ground, then either there is no connection at the ECM, a bad ECM, or the crank sensor may have failed.

If you have a live data scan too, check to see if there is an RPM signal when cranking. If there is a tachometer in the vehicle, see if it is moving when cranking.

Let me know.
Joe

This could be a couple things but we need to start with making sure the security light is not on or flashing. Then we need to check for codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Next we need to check the crank sensor. If the above checks out then I suspect the crank sensor is the issue for no spark. However, we need to check for fuel pressure as well because if we don't have fuel or spark then the ECM may be the issue.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let's check this out and go from there.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Okay, great. thank you for your response. I will let you know as soon as I get those checks done.

Sounds great. We will wait to hear back and Joe or I will get back to you. Thanks

I got fuel pressure at the injectors, no spark and I’m no rpm when cranking. also if it’s the crank shaft sensor I would need some help finding it. Thank you

That sounds like a crank sensor. Here is a guide that covers that in more detail:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

I also attached the info on this sensor from the manual. Let us know what happens.

Okay, I will get back to you with the results.

Sounds great. Thanks for the update. We will wait to hear back.

I can’t seem to find the crank shaft sensor in that location. My engine is a j20a.

It should be behind the alternator mounted on the engine. See the attached pic.

Let us know.

Joe

This is a pic of what’s behind the alternator:

Hi,

I'm having a hard time orienting myself to the pic. Just to confirm, this is a 2.4L 4 cylinder, correct?

I copied your pic and circled two things. Again, orientation is difficult when looking at your pic and the one in the manual. However, is one of the items I circled possibly what we are looking for?

Let me know.

Joe