Loud bang noise and my engine revved up like it was in neutral

Hi and thanks for using 2CarPros.

Are you sure one of the universal joints on the drive shaft did not break? Also, when you put it in gear, is there any noise?

Here is a link that discusses universal joints (u-joint). Take a look under the vehicle to see if everything is still attached.

https://www.2carpros.com/articles/how-u-joints-work

Let me know.

Joe

Welcome back. I have one more question. Does the speedometer show the vehicle is moving when it is in gear and not moving?

I am sorry. I should have asked that last night. If the speedometer is working and showing the vehicle is moving, the problem is most likely in the transfer case or a differential. If it is not moving, I suspect it is in the transmission.

Based on it being a transmission related issue, secure the vehicle so it cannot move. With the engine off and wheels blocked, crawl under the truck and remove the inspection plate where the flywheel attaches to the engine on one side and the torque converter is attached on the other.

Inspect the flywheel. Since you heard a bang, I question if the flywheel broke and is no longer turning the torque converter. At least this is a starting point. See if it is loose or you can turn the flywheel by hand easily.

Do this and let me know what you find. If the speedometer is not working (falsely) I suspect something broke between the flywheel and the output shaft (where the output speed sensor is located). If the speedometer works but the truck does not move, something has broken after that point.

Do this and let me know what you find. Also, if you have a scanner, scan the computer to see if there are any transmission related trouble codes stored.

Take care and let me know what you find. If I do not hear from you in a couple days, I wish you and your family a nice Thanksgiving.

Take care,
Joe

Happy to help. Let me know.

Take care,
Joe

Sorry I missed this one. It sounds like the transmission input shaft broken. Here is a video that will show you step by step how to pull the transmission. Your car will have a transfer case with I have attached diagrams for below.

https://youtu.be/3vJAojsrfuU

Pull the unit to install a rebuild. Also, I would install a new radiator because the metal for the old transmission will end up in the cooler.

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

Thanks Jimmy Please do.

Hi and welcome back:

When you said there was no signal for the speedometer, I had a feeling it was related to the transmission. That's a lot of money. I hope you have a lot of luck with the vehicle.

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

Joe

It does sound like an uncommon event. Ken was on the right track with his diagnosis. I'm sorry to hear it was so expensive.

Regardless, I wish you and your family a nice holiday season.

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

Joe

Thanks, Jimmy.

Honestly, it really differs based on where you are located. However, with the upgrades, it's not anything crazy. I don't feel it is out of line.