Will not start

Hi,

What you are describing to me sounds like a weak connection. What can happen is this. When you check for power, the wiring can provide it for a test light, but when a load is placed on it, the connection fails. However, which connection.

Since I assume you are providing a new ground when you check for power with it disconnected, my first guess is the ground is failing. So, take a look at pic 1. Check the ground for the pump. The pic indicates location.

Next, I need you to check both the fuel pump relay and the auto shut down relay (ASD) shown in pic 2. If there are relays with the same part numbers in the box, switch them to see if it makes a difference. If there isn't, here is a link that explains how to test a relay:

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

Here are a few other links you may find helpful:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

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

https://www.2carpros.com/articles/how-to-check-wiring

Let me know if this helps or if you have another question.

Take care,
Joe

You are very welcome. A broken wire will do it. Where was the wire that was the cause? I ask because your response may help another person having the same problem. If you get a chance, let me know.

Take care and let us know if you have questions in the future.

Joe

Wow. That would have been a tough one to see. Thank you for letting me know. It will help another person in the future.

Take care and come back anytime you have questions.

Joe