Will not start

Hi,

When you get a clicking sound, that often indicates a weak battery or there is a weak connection between the battery and the starter.

First, check to make sure the battery terminals are clean and tight. Here is a link you may find helpful:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Once you confirm the battery terminals are clean and tight, next I need you to load test the battery. Follow the directions in this link:

https://www.2carpros.com/articles/car-battery-load-test

If the battery checks good, let me know. Also, let me know if it is one click, or if it clicks rapidly. If you can tell approximately where it is coming from, that may help as well.

Take care,

Joe

Hi,

Interestingly, the idea that you hear the starter click indicates the circuit is working and sending power to the solenoid on the starter. Since the starter was replaced and if the old one did the same thing, we can assume the starter itself isn't the issue. So that leaves an electrical issue.

So, the most common cause of this type of issue is a weak connection. The starter puts a heavy load on the electrical system. If there is a corroded, loose, or damaged wire, that load can cause it to fail. And yes, it doesn't have to happen all the time. It can be intermittent.

Here is what I suggest. If you haven't already, confirm the battery terminals are both clean and tight. Check for corrosion around where they connect to the battery. See if you are able to turn them back and forth at all. The first link above that I attached will help guide you.

If you find that isn't the problem, check the connections at the starter. Do the same thing. Make sure they are clean and tight.

If they are, then the next thing I would recommend is checking the main ground that runs from the battery to the left side of the transmission. That ground could be corroded or loose.

Pic 1 below shows the wiring schematic for ground. That is the primary one I am concerned about. If you follow the ground from the battery, it will lead you to where it is bolted on. I attached the best pic I could find to show you what you are looking for. (Pic 2).

Disconnect the battery first, then disconnect the ground where it is bolted to the transmission. Take sandpaper and clean all the connection locations for it.

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

Take care,

Joe

See pics below.

PCM stands for powertrain control module. This is like the main computer, the vehicle's brain. It receives signals from multiple different sensors and other modules to ensure the vehicle is running properly.

It could be the cause. Did they spend any time diagnosing it? Also, were there any diagnostic trouble codes mentioned?

I attached two pics below of the starting system wiring schematic. If you look at the second pic, I highlighted the PCM so you can see how it is tied into the starting system.

Let me know if you have other questions.

Take care,

Joe

See pics below.

Hi Tiffany,

What I need you to do is have the can-bus scanned. CAN stands for controller area network. Basically, all the modules/computers are tied together via a few wires. By scanning the can, it will identify if there are codes in any of the modules. There is a chance it is the switch itself, but we don't want to start replacing parts until we are sure.

Here is a video showing how it is done. I don't know if they tried this at the shop, but this is where I would start. Also, I'm surprised nothing was found. Something is causing it to fail.

https://youtu.be/u-4syLc-ifQ

Let me know if this has been done. If it was, let me know the results.

Take care,

Joe