Intermittent no crank no start issue

Hi,

I need some verification. Do you mean the engine stalls and won't restart until it cools off or is this a starter problem?

If the starter itself is the issue, there could be a few causes. The starter itself could be going bad, the starter relay could be bad, and so on.

If the problem is it stalls and won't restart until it cools, that sounds like a typical faulty crankshaft position sensor.

Do me a favor. Take a look through these links. The first one covers common symptoms of a failing crankshaft position sensor. The second explains how to diagnose a bad starter.

Let me know if the symptoms seem to mirror what you experience or if checking the starter helps.

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

https://www.2carpros.com/articles/starter-not-working-repair

Also, check the starter relay itself. If there is another one in the box having the same part number, switch them to see if it makes a difference. If there isn't, here is a link that shows how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know what you find and what I can do to help.

Take care,

Joe

See pic below of relay location. (under hood)

Greg,

If shifting through the gears seems to make a difference, it could be related to the transmission range sensor. When it won't start, first, confirm that the indicator shows P. Then, see if it starts in Neutral.

Let me know.

Joe

I attached the wiring schematic for the starting system below. Tell me which pin you power to make it work. Or, do you jump it right at the starter?

If it isn't the relay, we are going to need to work backwards to see where power is lost. It could be the powertrain control module or the BCM as well.

If you haven't already, make sure the ground for the relay is in good condition and make sure the fuse after is tight and not corroded.

Let me know what you find.

Take care,

Joe

See pics below.